Ultrafine 15D/20D Second-Skin Nylon2026 trend
Thin, dense and smooth — the bonded-cup quality. Takes adhesive without strike-through.
78% Nylon / 22% Spandex · 170 gsm · 155 cm (61 in) · 4-way stretch
A bra fails differently from a legging. The underband loses tension first, then the cup edge curls, then the whole garment rides up during a run. All three trace back to the knit: modulus, recovery and how the fabric behaves when it is cut on the bias for a curved cup.
Support is not the same as thickness. A 250 gsm high-modulus nylon spandex holds the underband with less fabric than a soft 220 gsm knit that feels substantial in the hand but relaxes after ten wears. Ask for elongation and residual growth, then test the underband after repeated extension — that number is the bra.
Bonded cups and laser-cut edges need a thin, dense, smooth fabric that takes adhesive without strike-through or bubbling. Ultrafine 15D/20D nylon is the quality most brands land on. Cut-and-sew bras tolerate heavier, more forgiving knits and are cheaper to develop while you are still fitting the pattern.
High-sweat categories — spin, HIIT, hot yoga — want a moisture-wicking face rather than a brushed one, because a peached surface holds water against the skin. For printed bras, polyester interlock takes sublimation with sharper detail and less colour loss than nylon.
Thirteen knit qualities, posted in 3–5 days. Tell us the garment and the colour.
6 qualities for sports bras
Thin, dense and smooth — the bonded-cup quality. Takes adhesive without strike-through.
High-modulus 85/15 for medium and high support. Holds the underband instead of relaxing.
For ribbed bralettes and sets where the texture is the product story.
Sublimation-friendly for printed bras and team ranges.
For spin and HIIT bras where the face has to move sweat rather than hold it.
The soft, matte option for low-support studio bras and lounge bralettes.
Before you commit
170–250 gsm. Light support and bralettes sit at 170–200 gsm; medium and high support want 220–250 gsm on a high-modulus yarn so the underband keeps tension without bulk.
Nylon gives a softer, cooler hand and better recovery for support layers. Polyester wins on print detail and price for printed or high-volume ranges. Many brands run nylon for the bra and polyester for the matching printed range.
Yes — ultrafine 15D/20D nylon in a smooth, dense build is what bonded cup lines usually specify. Tell us the adhesive process you run and we will confirm the face finish that suits it.
Send the style, the support level and your target MOQ. We reply with the two qualities that fit and the one we would not recommend for that construction.
Request swatches & pricing