Illustrative situation
A brand developing seamless leggings and sports tops is offered a nylon-elastane knit and a polyester-elastane knit at different prices. The nylon option feels softer, but the polyester option is cheaper and dries faster.
Main answer
Nylon, also called polyamide, usually feels softer and smoother with good stretch recovery and abrasion resistance, while polyester is cheaper, dries faster and holds colour well. Compare both in the same seamless knit, with the same elastane share, on feel, moisture handling, pilling, price and the claims you plan to make.
Naming and labels
In the US the generic fibre name is nylon, and in the EU the name used on labels is polyamide, under Regulation 1007/2011. Both describe synthetic polymers from the same family, so a US nylon fabric may appear as polyamide in an EU specification. Check that the label names the fibres and percentages correctly for the market.
Feel and comfort
Nylon has a soft, smooth, almost silky feel against the skin and drapes well, which is why it is common in premium seamless and yoga wear. Polyester tends to feel slightly crisper or drier, though microfibre versions can be very soft. Both can be knitted in fine gauges for seamless garments.
Moisture and drying
Polyester absorbs little moisture and dries quickly, and it carries sweat away from skin through the fabric. Nylon absorbs somewhat more water and dries a little slower, but still dries quickly compared with cotton. Odour behaviour differs with fibre and finish, so test on your own fabric.
Sustainability and recycled options
Both fibres are available in recycled versions, but a recycled claim needs documents. If you want to claim recycled content, ask for the certificate and the percentage, and check that your wording matches the evidence.
Durability, colour and cost
Nylon is known for abrasion resistance and recovery. Polyester resists fading and sunlight well and usually costs less. Both can pill on the surface in friction areas. Request pilling, recovery and colour fastness data for each fabric. See seamless apparel sourcing and activewear development.
Fact, recommendation, uncertainty
- Established fact
- The US generic name is nylon while the EU label name is polyamide under Regulation 1007/2011, and fibre content must be named correctly on labels.
- Recommendation
- Choose nylon for softness and recovery, polyester for cost, drying and colour retention, and test both as finished knit.
- Uncertainty
- Real performance depends on yarn, gauge, elastane and finishing, so test your own fabrics.
Sources and further reading
- eCFR — 16 CFR Part 303, Textile Fiber Products Identification Act rules
- EUR-Lex — Regulation (EU) No 1007/2011 on textile fibre names and labelling
Sources checked on 24 October 2026. Standards bodies sell the full texts; we cite what their public pages state. General information, not legal or technical certification advice.
More perspectives from the team
Three further views on the same question, each by function. They add conditions and limits to the main answer; they are editorial notes, not customer reviews.
Sino Finetex Editorial Team Sourcing
Ask for composition, yarn denier and recovery data for each candidate fabric. Limit: some suppliers only provide data for a different fabric, so request your own. Ask whether the nylon or polyester is virgin or recycled and request supporting documents.
Sino Finetex Editorial Team Product selection
Match fibre to the use, such as nylon for yoga and polyester for running in heat. Limit: customers may mix uses, so offer clear descriptions. Offer a note on the care of each fibre, since they handle heat differently.
Sino Finetex Editorial Team Quality & care
Wash and wear test both for pilling, recovery and odour. Limit: wear tests need several testers to be useful. Check dye consistency between nylon and polyester panels if the garment mixes them.
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