Stacked 220gsm polyester polar fleece gym blankets beside lab swatches, wash tags, and QC test sheets in a textile mill sample room

Start with the use case, not the finish

A fitness studio blanket is not a hotel throw. It gets hand contact, mat contact, towel-bag compression, locker-room humidity, repeated laundering, and occasional exposure to disinfectant spray residue. A 220gsm polyester polar fleece gym blanket should therefore be specified around base-cloth performance first: stable handfeel, low lint, acceptable pilling, controlled shrinkage, colourfastness, compliant labelling, and a verified odour-control system that survives the buyer’s actual wash cycle.

At 220gsm, polar fleece sits in a practical middle band. Below about 180gsm, the blanket can feel thin, show seam distortion after decoration, and lose thermal feel after repeated brushing and washing. Above roughly 260gsm, bulk, drying time, carton volume, and laundry cost rise. A 220gsm build is usually chosen when the buyer wants a soft, warm blanket that folds small, dries reasonably fast, and accepts a small logo without becoming a heavy retail throw.

For the RFQ, give the mill a base specification rather than a marketing phrase: finished size 130 × 170cm or 150 × 200cm; 100% polyester polar fleece; finished fabric weight 220gsm ±5% for controlled programmes, or ±8% for lower-cost promotional runs; one-side or two-side brushing; anti-pilling target; edge finish; decoration method; and the exact wash regime. If the studio launders at 60°C or uses high tumble heat, state that before sampling. If faster drying is critical, ask us to adjust pile height, density, and brushing depth rather than simply cutting GSM.

Do not let the finish hide a weak cloth. Base fabric weight should be checked to ISO 3801 or ASTM D3776. Dimensional change should be checked to ISO 5077 after ISO 6330 washing, unless the buyer requires a commercial-laundry protocol. Colour fastness should be agreed for washing, rubbing, and perspiration, for example ISO 105-C06, ISO 105-X12, and ISO 105-E04. Pilling should be stated by method, commonly ISO 12945-2 Martindale or ISO 12945-1 pilling box depending on the lab setup, with a practical target such as grade 3–4 after the agreed cycles for a mid-market fleece.

If you already source other fleece styles, compare them before locking the programme. A decorated fleece blanket may tolerate print better, but anti-odor claims need a different evidence file. If the buyer needs asset tracking through laundry service, the conversation should move toward a laundry-managed textile rather than a simple promotional blanket.

What ISO 20743 proves, and what it does not prove

Zinc oxide is used in textile finishes because it can inhibit bacterial growth under defined conditions. That does not automatically prove that a blanket will smell fresh in real gym use. ISO 20743 measures antibacterial activity on treated textile specimens; it is not an odour-reduction test and it does not prove hygiene, disease prevention, infection control, or user health benefits. This distinction matters for both buying decisions and regulatory wording.

A credible ISO 20743 report should include the organism strain, not just the species. Common organisms used in textile antibacterial testing include Staphylococcus aureus ATCC 6538 and Klebsiella pneumoniae ATCC 4352, although the buyer should select organisms that match the claim and market expectation. The report should state the test method used, such as absorption, transfer, or printing method; inoculum concentration; incubation time and temperature, often around 18–24 hours at approximately 37°C; neutralisation procedure; untreated control performance; bacterial growth validity; antibacterial activity value; and results before and after washing.

For buyer thresholds, avoid vague language such as “meaningful reduction”. A common purchasing requirement is an antibacterial activity value A ≥ 2.0 against each selected organism on unwashed goods, with retained activity after 20 or 30 ISO 6330 wash cycles if the claim will be used for a studio laundry programme. Some buyers request A ≥ 3.0, but higher targets can affect finish chemistry, handle, shade, cost, and lead time. If the report gives percent reduction only, ask for the calculation basis and the untreated control data. A “99%” line without control growth and method is not enough for PO approval.

Results can change by organism, inoculation method, moisture level, pile density, finish add-on, cure condition, shade, and wash history. Polar fleece is also not a flat woven surface; pile height and brushing can influence contact between bacteria and the treated fibre surface. Test white lab swatches only for screening. Final approval should include at least one bulk-intended dark colour and one light colour if both will ship.

Add an odour-specific test route

If the commercial claim is “anti-odor”, “odour control”, or “helps reduce textile odour”, add an odour-specific route. ISO 20743 supports antibacterial activity; it does not measure ammonia, sweat acids, aldehydes, or sensory odour perception. For gym blankets we normally discuss ISO 17299 deodorant testing, supported by a controlled sweat-exposure screening protocol during development.

Relevant ISO 17299 routes include ISO 17299-2 detector tube method, ISO 17299-3 gas chromatography method, and ISO 17299-4 sensory analysis method. The right method depends on the claim, odourant, budget, and retailer requirement. Detector tube testing is often faster and lower cost for screening. GC can give stronger instrumental data for selected volatile compounds. Sensory panels can reflect human perception but need tight control because panel fatigue and sample bias are real failure modes.

For gym use, agree target odorants before testing. Ammonia is useful for alkaline sweat and detergent-residue odours. Acetic acid and isovaleric acid are relevant to sour sweat and foot/body odour notes. 2-nonenal may be considered for stale oily odour, although not every lab offers it for textiles. A practical acceptance criterion may be at least 70% reduction for selected odorants after the defined contact time on unwashed goods, and at least 50% retained reduction after 20 washes; stricter or looser targets should be tied to the claim wording and market risk.

The odour test report should identify the blank/control, specimen mass or area, chamber or bag volume, initial gas concentration, contact time, test temperature and humidity, measurement method, and wash history. If a sensory panel is used, require panel size, scoring scale, blinding method, conditioning time, and pass/fail rule. Do not approve a broad “stays fresh for 30 washes” line from one ammonia detector-tube result on an unwashed white swatch.

A useful development package is: ISO 20743 antibacterial activity before and after washing; ISO 17299-2 or ISO 17299-3 for ammonia and isovaleric acid; ISO 105-C06, ISO 105-X12, ISO 105-E04 colourfastness; ISO 12945-2 pilling; ISO 5077 dimensional change; and an internal artificial-sweat sealed-bag comparison for handfeel and odour screening. For broader care and washing expectations, align the label with a practical blanket care washing guide, not with a lab condition that the studio will never use.

Define the zinc oxide finish before comparing prices

Two quotations can both say “zinc oxide anti-odor” and still be technically different products. Ask whether the zinc oxide is nano or non-nano; the approximate particle size range; whether the active is dispersed in a polyurethane, acrylic, silicone, or other binder; whether the finish is pad-dry-cure, exhaust-applied, spray-applied, or coating-assisted; and whether the supplier can state the target add-on range. We normally expect suppliers to control add-on by wet pick-up, bath concentration, line speed, and curing temperature, but the finished handle and wash retention are what the user will feel.

For buying control, define nano status clearly. Under EU terminology, “nanomaterial” generally relates to particles where 50% or more of particles in the number size distribution have one or more external dimensions in the 1–100nm range, subject to current legal definitions and sector interpretation. Non-nano zinc oxide should be backed by supplier technical data rather than an informal email. If nanoparticles are used, disclosure and regulatory review may be required, especially for EU/UK treated articles and any product information that implies a biocidal function.

A practical target add-on for an anti-odor finish may sit in a low single-digit percentage on weight of fabric, but the correct figure depends on active concentration, binder, wash target, and handfeel. The PO should state either a finish add-on tolerance, for example target ±10% relative where the supplier has a measurable control method, or a performance-based requirement where add-on is proprietary. If the supplier will not disclose formulation detail, require SDS, TDS, application guide, restricted-substance statement, and written confirmation of the active substance identity and nano/non-nano status.

Migration and shedding controls matter on fleece. A poorly bound surface treatment can leave a dry mineral hand, visible dust on black and navy, reduced performance after laundering, or transfer during cutting and packing. Ask for post-wash lint observation, dark-colour rub inspection, and, where relevant, a migration or extractables review by the buyer’s chemical compliance team. Zinc oxide can also affect shade, whiteness, optical brightener response, fluorescence, and dark-colour rub-off appearance. Test on actual bulk colours, not only white lab swatches.

Documentation should match the market. Depending on the buyer and claim, ask for REACH SVHC declaration, ZDHC MRSL conformance statement for the chemical input where available, OEKO-TEX Standard 100 coverage only if the supplier’s certificate scope actually includes the material and finish, and bluesign information only if the chemical/product is genuinely listed or approved within that system. Do not let a mill attach unrelated certificates for a different fabric, different shade, or different finishing plant. For a wider document discipline, see textile certifications explained.

Destination-market claim and labelling controls

Antibacterial and anti-odor wording can trigger regulatory review. In the EU, treated articles fall under the Biocidal Products Regulation (BPR) where a biocidal function is claimed. The active substance must be permitted for the relevant product type and use, and treated-article labelling can be required when a biocidal property is claimed. The label may need to state that the article has been treated with a biocidal product, identify the biocidal property, and name the active substance. If nanomaterials are present, EU rules can require the name of each nanomaterial followed by “nano” in brackets, subject to the final legal classification and use.

The UK operates a separate post-Brexit biocidal products regime. Do not assume EU BPR acceptance automatically covers Great Britain. Northern Ireland can have different alignment issues depending on the route to market. For UK/EU sales, marketing, care labels, hangtags, product pages, and retailer data sheets should use the same controlled wording. Mixed wording is a common audit problem: a compliant sewn label is undermined by a web listing that says “kills bacteria and protects your members”.

In the US, antimicrobial claims are controlled under EPA/FIFRA. The treated-article exemption is narrow and generally allows claims that the preservative protects the article itself, not users. Typical lower-risk wording is along the lines of “treated to help inhibit the growth of odour-causing bacteria on the blanket” or “antimicrobial treatment protects the product from odour-causing bacteria”. Prohibited or high-risk wording includes “protects users”, “sanitises the blanket for safe use”, “prevents infection”, “kills germs on contact”, “antibacterial protection for your skin”, or any public-health disease claim unless the product and claim have the required regulatory basis.

For UK/EU and US markets, keep the claim tied to the textile, the odour source, and the tested durability. Better: “Anti-odour finish helps reduce odour-causing bacteria on the fabric; tested after 20 washes.” Riskier: “Stays hygienic for 30 washes.” Avoid: “Prevents cross-contamination in gyms.” If an ISO 17299 odour result is used, phrase the claim around the tested odorants, for example “tested for ammonia and isovaleric acid odour reduction under ISO 17299 conditions,” rather than implying all sweat odour is eliminated.

Restricted substances should be handled separately from claim regulation. For polyester fleece gym blankets, request REACH SVHC review for EU/UK, California Proposition 65 review if selling into California, heavy metal and formaldehyde limits where retailer manuals require them, and a chemical inventory statement for the zinc oxide finish. If the product is sold for children, additional CPSIA or toy-adjacent checks may apply depending on design, age grading, and market positioning; do not treat an adult studio blanket as a children’s throw without reassessing the compliance file.

Commercial laundry validation, not only home washing

Many lab reports use ISO 6330 home laundering because it is standardised and reproducible. A fitness studio may use a harder process: alkaline detergent, higher mechanical action, 40–60°C wash, tumble drying, disinfectant or oxygen bleach, and mixed textile loads. If the blanket will be laundered by a commercial service, validate against that reality before promising 20 or 30 wash durability.

Ask the laundry or studio for the actual wash recipe. A useful validation protocol states detergent type and dose, pH if known, wash temperature, wash time, liquor ratio, load factor, rinse count, extraction speed if relevant, disinfectant chemistry, tumble temperature, drying time, and whether softener is used. For example, a studio-use validation might specify 60°C wash, commercial low-foam alkaline detergent, no chlorine bleach, optional oxygen bleach only if used in practice, liquor ratio around 1:8 to 1:12, tumble dry at 60–70°C outlet temperature until dry, and 20 or 30 cycles before retesting ISO 20743, ISO 17299, shrinkage, pilling, shade change, and handfeel.

Disinfectants are a major variable. Quaternary ammonium compounds, peracetic acid, chlorine bleach, oxygen bleach, and high-alkali boosters can interact differently with binders, dyestuffs, and softeners. A finish that survives ISO 6330 at 40°C may lose performance or handfeel under commercial dosing. If the buyer cannot control the laundry chemistry, use conservative wording: “treated to help reduce odour-causing bacteria on the fabric” rather than “30-wash odour control guarantee”.

Drying can create as much damage as washing. High tumble heat can flatten pile, increase static, cause edge curl, harden some binders, and make a 220gsm fleece feel thinner. If fast turnaround is required, we prefer to tune pile density and brushing during fabric development instead of relying on high dryer temperature. For heavy laundering programmes, compare a 220gsm anti-odor fleece with more laundry-stable constructions such as waffle or microfleece before confirming the SKU.

Sample stage: judge recovery, lint, odour retention, edge stability, and decoration

Do not approve from a flat swatch alone. Request a sewn proto in the actual finished size, plus lab-dipped or production-equivalent shades, because brushed polyester changes appearance after cutting, sewing, packing, and laundering. At sample stage, check pile recovery after compression, edge stability, lint shedding, shade uniformity, decoration durability, and whether the finish leaves a powdery, waxy, or mineral feel that end users will notice.

For compression recovery, fold the proto in the intended studio pack format, place it under carton-like pressure for 24–48 hours, then open and inspect after two hours and again after 24 hours. A good 220gsm polar fleece should recover without hard crease lines, although minor fold memory is normal. Record pile flattening, hard creases, shade pressure marks, and whether the blanket still folds neatly after washing.

For lint shedding, inspect both dry and damp. Use a black and white contrast surface, shake the blanket ten times, then rub the pile with a damp white cotton cloth and a damp black cloth. Record visible lint transfer and any mineral dusting from the finish. Lint is not only a consumer complaint; it can contaminate yoga mats, towel baskets, embroidery areas, packing tables, and laundry filters.

For odour retention screening, wash the proto three to five times at the expected studio temperature, dry it fully, expose it to a defined artificial sweat solution or used-textile simulation, then store it sealed overnight with an untreated control blanket. Score odour blind if possible on a 0–5 scale for sour, ammonia, stale, and chemical/mineral notes. This is an internal screening method only. Do not make a buyer-facing odour-control claim from a sniff test alone; validate the final claim through ISO 17299 or another agreed laboratory protocol.

For edge curling, measure all four sides before wash and after 1, 5, and 10 washes. Heat-cut edges are low cost but can feel sharp and may curl on some fleece. Overlocked edges add thread cost but improve perceived durability. Binding is cleaner for retail but adds bulk and can shrink differently from the body fabric. If a loop, strap, or accessory is added, review a related construction such as self-fabric carry loops so the handle does not distort the edge.

For decoration durability, test the exact logo method. Embroidery should be checked for backing abrasion, needle holes, puckering, and pile trapping after washing. Heat transfer should be checked for edge lift, cracking, dye migration, and press mark at the approved temperature and dwell time. Screen print should be checked for crocking, hand stiffness, and cracking after tumble drying. If the anti-odor claim applies to the final article, representative decorated specimens should be included in validation, not only undecorated fabric.

For post-wash handfeel, compare unwashed, 5-wash, 10-wash, and 20-wash specimens side by side. Score softness, pile loft, static, boardiness, cling, residual chemical odour, and perceived warmth. Over-brushed fleece often wins in the sample room and loses after laundry because it pills faster, sheds more fibre, and traps detergent residue. Ask the mill to hold brushing depth and shearing height consistent across lots.

Concrete PO clauses for a 220gsm anti-odor gym blanket

A purchase order should protect the technical claim, not only the size and colour. The following clauses are typical starting points; adjust them for your retailer manual, destination market, and budget. For inspection structure, align with a formal blanket quality control inspection plan rather than relying on pre-shipment photos.

Suggested base specification: 100% polyester polar fleece, 220gsm finished weight, tolerance ±5% by ISO 3801 or ASTM D3776; finished size 130 × 170cm, tolerance ±2cm length and width after relaxation; dimensional change after 5 ISO 6330 washes at agreed condition maximum ±3% length and width, or buyer-defined commercial-laundry protocol; edge overlock or specified binding with no skipped stitches over 5cm, no open seam, no exposed sharp heat-cut edge.

Suggested physical performance: pilling ISO 12945-2 grade 3–4 minimum after agreed cycles; washing fastness ISO 105-C06 grade 4 colour change and grade 3–4 staining minimum unless darker shades are agreed separately; rubbing fastness ISO 105-X12 dry grade 4, wet grade 3–4 minimum; perspiration fastness ISO 105-E04 grade 4 colour change and grade 3–4 staining; linting no visible fibre clumps after shake test and no excessive fibre deposit on contrast cloth according to approved reference sample.

Suggested finish and claim controls: zinc oxide anti-odor finish with declared nano/non-nano status; binder type declared at family level where proprietary detail is restricted; target finish add-on controlled to agreed range or by performance testing; no visible dusting, chalking, or unacceptable handfeel versus approved standard; ISO 20743 antibacterial activity A ≥ buyer-defined value against named organisms before washing and after stated wash cycles; ISO 17299 odour reduction against named odorants with agreed pass criteria; claim wording limited to buyer-approved text only.

Suggested wash durability: minimum 20 commercial or ISO 6330 cycles before retained-performance testing for studio programmes; 30 cycles only if quotation, finish selection, and lab budget support it. If marketing says “tested after 30 washes”, the test report must use the same or harsher washing condition than the care label permits. If the care label allows tumble drying, include tumble drying in validation.

Suggested retest and rejection rights: buyer may retest bulk from sealed production samples or shipment cartons at an accredited third-party lab; shipment may be rejected, reworked, discounted, or claim downgraded if GSM, size, colourfastness, pilling, shrinkage, odour-control performance, regulatory documentation, or approved claim wording fails agreed criteria; any formulation change, finishing-plant change, dyestuff change, binder change, or curing-condition change requires written approval and may trigger retesting.

Suggested AQL: use ANSI/ASQ Z1.4 or ISO 2859-1, general inspection level II, AQL 2.5 for major defects and 4.0 for minor defects unless the retailer requires tighter limits. Critical defects should be zero tolerance: wrong fibre content, wrong claim label, mould/mildew odour, sharp contamination, prohibited claim wording, missing care label, severe colour bleeding, or chemical documentation mismatch. For premium studio programmes, major AQL 1.5 may be justified, but inspection cost and rework time increase.

Buyer economics: what drives price and lead time

The main price drivers are fleece GSM, yarn denier and filament count, brushing and anti-pilling process, dyestuff class and shade depth, zinc oxide finish cost, binder durability, lab testing, decoration, edge finish, packaging, and order size. Dark colours can cost more to control because shade, wet rub, lint visibility, and zinc oxide haze are less forgiving. White and light grey can expose fluorescence and whiteness shifts after finishing.

MOQ changes when you add a functional finish. A plain 220gsm polar fleece in stock colour may be feasible at a lower MOQ if fabric is available. A custom-dyed, zinc oxide finished, tested, and claim-labelled programme usually needs enough yardage to justify dyeing, finishing-line setup, lab dips, and retained samples. As a rough planning guide, expect the finish and colour combination to push MOQ higher than a plain promotional fleece, especially if each colour needs separate ISO 20743 or ISO 17299 evidence.

Lab testing affects both budget and calendar. ISO 20743 with wash durability can take several weeks once washing cycles are included. ISO 17299 timing depends on odorants and lab queue; detector-tube routes are usually faster than GC or sensory panel routes, but availability varies. A full evidence package with pre-wash, 20-wash, colourfastness, pilling, shrinkage, and odour testing can cost enough to matter on small orders. For low-volume programmes, decide whether the claim value justifies the testing cost before sampling.

A realistic development timeline is: 3–7 days for base fabric review if yarn and shade are available; 7–14 days for lab dip and finish trial; 7–10 days for sewn prototypes; 2–5 weeks for wash durability and third-party testing depending on cycles and lab queue; then bulk production after approval. Risks that extend lead time include failed shade after zinc oxide finishing, odour test failure after washing, lab report revisions, retailer legal review of claim wording, and commercial-laundry compatibility issues.

Compare topical versus durable bound finish in quotations. A low-cost topical finish may look competitive at FOB stage and still fail after 5–10 washes. A durable bound system may add cost but reduce claim risk, returns, and relabelling. Ask each supplier to quote the same wash target, same allowed wording, same lab tests, same shade set, and same packaging. Without that, you are comparing a first-wash marketing treatment against a service-use textile finish.

For Incoterms, quote base programmes on FOB Ningbo or Shanghai when the buyer controls freight, or FCA if consolidating with other SKUs. DDP can be useful for small studio rollouts but hides duty, freight, testing, and rework assumptions inside one number. If comparing suppliers, keep Incoterms, carton CBM, units per carton, and test obligations identical. For lead-time and freight planning, a related reference is custom blanket lead times and shipping.

Supplier questionnaire for 220gsm anti-odor polar fleece

Use this questionnaire before sample approval. It forces the supplier to separate base fabric, finish chemistry, testing, and compliance. If any answer is “same as usual” or “no problem” without data, treat it as unapproved.

Base cloth: What is the yarn specification and denier range? Is the fleece circular-knit or warp-knit? Is it brushed one side or both sides? What is the target finished GSM and tolerance? What anti-pilling process is used? What is the expected pilling grade under ISO 12945-2? What is the finished-width utilisation and cutting shrink allowance?

Finish: Is the zinc oxide nano or non-nano? What is the active substance identity? What is the approximate particle-size range according to the chemical supplier? What binder family is used: polyurethane, acrylic, silicone, hybrid, or other? Is the finish pad-dry-cure, exhaust, spray, or coating-assisted? What is the target add-on or performance control point? What curing temperature and dwell time are required?

Compliance: Can the supplier provide SDS and TDS for the finish? Is there a REACH SVHC declaration for the finished article? Is there ZDHC MRSL information for the chemical input where available? Is OEKO-TEX coverage available for the exact fabric, shade, and finish, and is the certificate scope valid? Are there nano disclosure obligations for the destination market? Is the supplier willing to restrict marketing wording to buyer-approved claims?

Testing: Which ISO 20743 organism strains will be used? Which wash method and number of cycles will be used before retest? Which ISO 17299 part will be used, and which odorants? Will testing be done on the actual dark and light bulk colours? What is the retest plan if the first report fails? Who pays for retesting caused by formulation or process change?

Production control: How will wet pick-up, bath concentration, line speed, and curing be recorded? Will bulk lots be segregated by shade and finish batch? What retained samples will be kept? What AQL and inspection level are accepted? What defects are zero tolerance? Will the mill notify the buyer before changing dyestuff, softener, binder, active supplier, or finishing plant?

Sample inspection scorecard

A simple scorecard makes sample approval less subjective. Use the same sheet for proto, salesman sample, pre-production sample, and shipment reference sample. Keep approved and rejected references sealed and dated.

Score 1–5 for each item, with 5 as approved standard and 3 as minimum acceptable: handfeel softness; pile loft; compression recovery after 48 hours packed; lint shedding on black and white cloth; edge flatness after 5 washes; pilling appearance after lab or internal abrasion; dark-colour rub appearance; chemical/mineral odour after unpacking; odour after artificial-sweat sealed-bag screening; post-wash handfeel; decoration wash durability; label accuracy; fold and pack recovery.

Set automatic failure points. Reject or resubmit if there is visible zinc oxide dusting on dark fabric, severe shade change after finishing, wet rub below agreed grade, pilling below agreed grade, shrinkage above limit, open seam, edge curl exceeding approved reference, persistent chemical odour after airing and washing, heat-transfer edge lift, embroidery backing abrasion against skin, wrong claim wording, or missing compliance documentation.

For shipment inspection, compare random carton samples against the sealed approved sample for shade, pile direction, GSM, size, edge, label, logo, pack fold, and odour. A fleece lot can pass lab testing and still fail commercially if pile direction is mixed or if black blankets show white mineral specks from the finishing bath.

Frequently asked

Can we claim “antibacterial gym blanket” if the fabric passes ISO 20743? Not automatically. ISO 20743 supports antibacterial activity on the textile under defined lab conditions. Claim wording must also fit the destination market. In the US, EPA/FIFRA treated-article rules generally limit claims to protection of the article itself. In the EU and UK, biocidal treated-article rules and labelling may apply. Avoid public-health wording unless the regulatory basis is confirmed.

Is ISO 20743 enough for an anti-odor claim? No. ISO 20743 is not an odour test. For anti-odor or odour-control claims, add ISO 17299 testing against relevant odorants such as ammonia, acetic acid, isovaleric acid, or nonenal, or use another agreed lab protocol. ISO 20743 and ISO 17299 answer different questions.

What wash durability target is realistic for studio-use fleece blankets? For a basic programme, 10 washes may be enough if the claim is modest. For rental or studio laundry use, 20 washes is a more credible starting point. A 30-wash claim needs a stronger bound finish, darker-shade verification, and enough test budget. The wash method should reflect actual laundry conditions, not only a mild home-wash cycle.

Does zinc oxide change the colour or handfeel of fleece? It can. Zinc oxide may affect shade, whiteness, fluorescence, dark-colour haze, rub appearance, and handfeel, especially if the finish is poorly dispersed or weakly bound. Always approve on actual bulk colours, including black, navy, and charcoal if those are in the range.

What is the best edge finish for 220gsm gym blankets? Overlock is the usual practical choice because it balances cost, wash durability, and soft edge feel. Heat-cut edges are cheaper but can curl or feel sharp. Binding looks more retail-ready but adds cost and can shrink differently from the fleece body. Test the chosen edge after repeated washing and tumble drying.

What should be written on the PO for the anti-odor finish? State the active chemistry, nano/non-nano status, binder family if available, finish add-on or performance requirement, ISO 20743 organisms and wash cycles, ISO 17299 odorants and pass criteria, approved claim wording, documentation required, retest rights, and rejection criteria. Do not accept “anti-odor finish as sample” as the only control.

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