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Ultrafine 15D/20D Second-Skin Nylon — Custom Manufacturer & Wholesale Supplier

Knitted from 15D/20D filament yarn, this is the lightest fabric in the range. It is built for garments that are meant to disappear on the body — high-waisted seamless leggings, bonded tops, sculpting one-pieces.

2026 trend

超细旦第二层肌肤锦氨 · Chinese trade name

  • Ultrafine yarn gives a smoother, denser surface than standard 40D knits
  • Very high stretch with fast recovery — engineered for seamless and bonded construction
  • Thin enough for layering, strong enough for high-waisted waistbands
  • Takes sublimation and acid print with fine detail

Typical applications

Seamless leggingsBonded sports brasSculpting bodysuitsSecond-skin topsPerformance base layers
Swatch pack

See the fabric before you commit

Thirteen knit qualities, posted in 3–5 days. Tell us the garment and the colour.

Request swatches

Specification

What we will hold the mill to

Reference values from the partner mill. Final specification is confirmed on the approved sample — the numbers below are what we test against, not marketing copy.

Composition78% Nylon / 22% Spandex (ultrafine 15D/20D yarn)
Weight170 gsm (160–180 gsm range)
Usable width155 cm (61 in)
Stretch4-way stretch, elongation 200% × 130%
Finish optionsUltrafine knits are usually finished with a slick or matte face; both are available. Bonding-friendly versions supplied on request.
Minimum order300 kg per colour, dyed to order (stock shades in smaller lengths)
SamplingSwatch free · lab dip on approval · sample yardage available
Lead time25–35 days after lab dip approval, depending on colour and quantity
CertificationOEKO-TEX Standard 100 available · GRS with transaction certificate where applicable
OriginPartner mills in Guangdong and Fujian, China

Buyer questions

Ultrafine 15D/20D Second-Skin Nylon — what buyers ask

What does 15D or 20D mean?

D is denier — the thickness of the filament yarn. 15D/20D is roughly half the thickness of the 40D yarn used in standard activewear knits. Finer yarn means a smoother, denser, lighter fabric, and it is what makes the 'second skin' feel possible.

Is ultrafine nylon durable enough for leggings?

Yes, provided the knit density is right. Finer yarn has less abrasion resistance per filament, so we compensate with higher stitch density and test abrasion before bulk. For high-friction training wear, the 240 gsm compression quality in this range is the safer choice.

Can it be used for seamless machines?

The fabric itself is cut-and-sew. For true seamless garment knitting you need a garment machine, not fabric — we can advise which route fits your target price and MOQ.

What is the minimum order?

300 kg per colour dyed-to-order. Ultrafine qualities are made to order, so allow 25–30 days for bulk after lab dip approval.

Also in the range

Pair it with

GRS Recycled Nylon Spandex

Recycled nylon spandex with GRS certification available through our partner mills — with the paperwork brands audit.

Sample Ultrafine 15D/20D Second-Skin Nylon before you commit

We post physical swatches in 3–5 days, and can run a lab dip against your Pantone reference in parallel so colour and hand-feel are approved at the same time.

Request swatches & pricing