Nylon-Spandex Fabric for Leggings, Compression & Sports Bras
- Est. 2005 · Sialkot, Pakistan
- MOQ 20–25 pcs per design · no limit for brands
- Free 24h digital mockup
- Sample 5–7 days, credited on bulk
- Bulk 15–25 business days · express 7–12
- DHL/FedEx/UPS 5–10 days
- 🛡️ Free remake within 3 days
What nylon-spandex fabric is
Nylon-spandex is a knitted fabric that combines nylon (polyamide) with 12–20% spandex, the elastic fibre also sold as elastane or Lycra, to produce 4-way stretch. Nylon supplies the strength, smooth hand-feel and abrasion resistance; spandex supplies the stretch and the recovery that pulls the garment back to shape after every movement.
4-way stretch means the fabric extends and recovers both along its length and across its width. This is what lets a legging follow a squat, a lunge or a deep yoga pose without bagging at the knees or waist. Rash guards, compression tops, sports bras and dance costumes all need the same property.
For leggings, compression garments and sports bras, ZipaSports runs nylon-spandex at 240–300 GSM. The same blend at a lighter 180–220 GSM is used for rash guards, where flatlock seams and quick drying matter more than opacity. Both weights are cut and sewn in the factory in Sialkot, Pakistan, and the buyer chooses the exact weight and elastane percentage within those ranges.
Specification table: weights, elastane and garments
The table lists the standard nylon-spandex options a buyer can specify. These are option ranges, not one fixed fabric: within each row, production is set up to the composition and GSM confirmed on the physical sample.
| Garment | GSM | Elastane | Stretch | Construction notes |
|---|---|---|---|---|
| Leggings and tights | 240–300 | 12–20% | 4-way | Squat-proof opacity; gusset; flatlock or coverstitch seams; wide waistband |
| Compression tops and shorts | 240–300 | 12–20% | 4-way | Cut with negative ease for a firm hold; flatlock seams |
| Sports bras | 240–300 | 12–20% | 4-way | Lined front; elastic underband; removable pad pockets optional |
| Rash guards | 180–220 | Per specification | 4-way | Flatlock seams; quick drying; lighter than legging weight |
| Dance and cheer garments | 180–220 | Per specification | 4-way | Spandex blends with foil, velvet, mesh and sequin options |
Elastane percentage sets how far the fabric stretches and how firmly it recovers. Toward 12% the knit is stretchy but relaxed, suited to yoga and studio wear; toward 20% it holds the body with the firmer pressure expected of compression garments. The GSM chart for every garment shows how these weights compare with jerseys, fleece and the rest of the range.
What makes a legging squat-proof
A legging is squat-proof when the fabric stays opaque while stretched over the body at full flexion, and that depends on fabric weight and knit density more than on colour. At 240 GSM and above, a nylon-spandex knit has enough yarn per square metre that the loops do not open far enough to show skin when stretched across the seat and thigh.
Three things reduce squat-proofing: a fabric below the 240 GSM floor, a pattern with too little room in the seat so the fabric is over-stretched, and pale colours, which show through sooner than dark ones at the same weight. The fix for each is in the specification: hold the weight at 240–300 GSM, grade the pattern properly across the size range, and sample light colourways at the heavier end of the range.
The check itself is simple to run on the physical sample: stretch the fabric over a hand in daylight and look for skin tone, then wear-test it through a full squat and a forward bend. Once the sample passes, production fabric is held to the same weight, and finished measurements are checked against the approved size specification before packing so the fit that passed is the fit that ships.
Nylon-spandex vs polyester-spandex
Nylon-spandex and polyester-spandex are made at the same 240–300 GSM and 12–20% elastane, and the choice between them comes down to hand-feel and how the garment will be coloured. Nylon feels softer and cooler on the skin; polyester is the one that can be sublimated.
| Property | Nylon-spandex | Polyester-spandex |
|---|---|---|
| Hand-feel | Softer, smoother, slightly cooler | Slightly drier and crisper |
| Colour method | Solid dyed shades matched to Pantone | Solid dyed or full sublimation print |
| All-over prints | No; sublimation dye does not fix properly in nylon fibre | Yes, unlimited colours, no crack or peel |
| Moisture | Absorbs slightly more; dries a little slower | Absorbs very little; dries faster |
| Abrasion resistance | Higher; nylon is the tougher fibre | Good |
| Surface decoration | Screen print, heat transfer vinyl, DTF, reflective transfers | The same methods, plus sublimation |
| Typical garments | Solid-colour leggings, sports bras, compression and studio wear | Printed leggings, sublimated compression kit, team base layers |
A practical rule: if the collection is built on solid colours with a small logo, specify nylon-spandex; if it needs prints, camo, gradients or all-over patterns, specify polyester-spandex. Many brands run both within one range and keep the same block pattern for each so sizes match across the collection.
Colours and decoration on nylon-spandex
Nylon-spandex is coloured by dyeing the fabric to a solid shade, and the factory matches that shade to any Pantone reference the buyer supplies. Because the colour is in the fibre, there is no print edge to wear off at seams or under a waistband.
Sublimation is not used on nylon because sublimation dye is designed to bond with polyester fibre; on nylon the result is patchy and washes out. If the design needs an all-over print, the correct move is to switch to polyester-spandex at the same weight rather than force a print onto nylon.
Surface decoration that works on nylon-spandex:
- Screen printing with stretch-rated inks for logos and wordmarks on the hip, calf or chest.
- Heat transfer vinyl for small stretch logos and reflective details.
- DTF transfer for full-colour logos in small quantities.
- Woven labels and printed size tags inside the waistband, with hang tags and branded polybags for retail.
Keep printed areas away from the highest-stretch zones such as the seat and knee, where a large print block resists the stretch and can crack. A hip logo, a calf wordmark or a small back-waist mark are the positions that last.
Gusset, flatlock seams and waistband construction
Construction decides whether a nylon-spandex legging fits well and lasts, and the three details that matter most are the gusset, the seams and the waistband.
A gusset is a diamond or triangular panel sewn into the crotch. It removes the four-seam junction at the centre, which is where a legging without a gusset chafes and splits, and it lets the fabric move with the hips. A gusset should be specified on every legging and compression short in the tech pack.
Flatlock seams butt the two fabric edges together and cover them with a flat stitch, so there is no seam allowance pressed against the skin. They are the standard for leggings, compression wear and rash guards. Coverstitch is used for hems and waistband topstitching; overlock is used where a seam is hidden under a waistband or binding. Flatlock, overlock, coverstitch and lockstitch sewing lines all run in-house.
Waistbands are cut high-rise or mid-rise, either as a wide self-fabric band, usually doubled for a firmer hold, or with an internal elastic, with an optional hidden key pocket and drawcord. For sports bras the equivalent details are a lined front, an elastic underband, a racerback or crossback strap layout and removable pad pockets.
Sizes, fit and compression ease
Nylon-spandex garments are graded from a women's block in XS–4XL, a men's or unisex block in XS–5XL, and youth sizes on request, with fully custom size charts for brands that already have a house fit. Patterns are made and graded on computerised software so every size keeps the same proportions.
Compression garments are cut with negative ease: the pattern is smaller than the body measurement so the elastane stretches to hold the body. How much negative ease depends on the elastane percentage and the intended pressure, and it is confirmed on the physical sample rather than assumed. Yoga and studio leggings are cut closer to zero ease for a relaxed fit.
Because stretch fabric hides pattern faults until it is worn, it is worth approving one physical sample per block (legging, bra, top) before bulk. The sample takes 5–7 days, is charged at sample cost and is credited against the bulk order. The size chart guide covers how to build a chart for a new activewear brand, and the compression and yoga page shows the garment styles built on this fabric.
Ordering nylon-spandex activewear from ZipaSports
ZipaSports manufactures nylon-spandex leggings and shorts, compression wear and sports bras in Sialkot, Pakistan for activewear brands, gyms, yoga and pilates studios and distributors. Minimum order is 20–25 pieces per design, lower on request, and there is no MOQ limit for sportswear brands and companies.
The process starts with a free digital mockup within 24 hours from a logo, sketch or reference photo, with unlimited free revisions before approval. Bulk production takes 15–25 business days after design approval; express production of 7–12 days is available at additional cost. Express courier by DHL, FedEx or UPS delivers in 5–10 days worldwide, and sea freight takes 3–6 weeks for large runs. Woven neck labels, printed size tags, hang tags and branded polybags are produced under your own brand.
Quality Guarantee: if any garment arrives with a manufacturing defect, we remake it free of charge — the remake goes into production within 3 days of your report. Details are on the quality guarantee page. Message us on WhatsApp at +92 300 7019281; replies come within 2 hours during business hours, Monday to Saturday.
Frequently Asked Questions
Is nylon-spandex a good fabric for leggings?
Yes. Nylon-spandex at 240–300 GSM with 12–20% elastane is the standard fabric for solid-colour leggings because it gives 4-way stretch, a soft hand-feel and enough weight to stay opaque in a squat. Choose polyester-spandex instead only if the design needs an all-over print.
What GSM makes leggings squat-proof?
Leggings are squat-proof at 240–300 GSM in a nylon-spandex or polyester-spandex knit with 12–20% elastane. Below 240 GSM the knit opens enough under stretch to show skin, especially in pale colours. Hold the weight in that range and check the sample through a full squat.
What percentage of spandex should leggings have?
Leggings should have 12–20% spandex, also called elastane. Nearer 12% gives a relaxed stretch for yoga and studio wear; nearer 20% gives the firm hold expected of compression garments. The nylon in the blend supplies the strength, smooth feel and shape.
Nylon-spandex or polyester-spandex: which is better for activewear?
Nylon-spandex feels softer and is used for solid-colour garments; polyester-spandex is used when the design needs sublimation printing, because only polyester fibre takes sublimation dye. Both are made at 240–300 GSM with 12–20% elastane, so fit and squat-proofing are the same.
Can nylon-spandex be sublimated?
No, not reliably. Sublimation dye is designed to bond with polyester fibre; on nylon it fixes unevenly and washes out. Nylon-spandex is supplied in solid dyed colours matched to a Pantone reference, with logos added by screen print, heat transfer vinyl or DTF. For all-over prints, use polyester-spandex.
Is nylon-spandex breathable?
Nylon-spandex breathes through the knit structure rather than the fibre, and it dries slightly slower than polyester-spandex because nylon absorbs a little more moisture. For hot-climate or high-sweat use, choose the lighter end of the 240–300 GSM range or add mesh panels behind the knee and calf.
Can you match my brand colours in nylon-spandex?
Yes. Nylon-spandex is dyed to a solid shade and matched to any Pantone reference you supply. Minor shade tolerance between dye lots is normal, so keep the Pantone code on file for repeat orders. Colour is confirmed on the physical sample before bulk production.
What is the MOQ for custom leggings and sports bras?
The minimum order is 20–25 pieces per design, with lower quantities possible on request for a first sample run. Sportswear and activewear brands and companies have no MOQ limit. A free digital mockup is produced within 24 hours before any order is placed.
Do you make sports bras in nylon-spandex?
Yes. Sports bras are made in the same 240–300 GSM nylon-spandex with a lined front, elastic underband, removable pad pockets and a racerback or crossback strap layout, sewn with flatlock seams. Seamless bras are knitted separately in a nylon-elastane circular knit at 180–260 GSM.
How should nylon-spandex leggings be washed?
Wash nylon-spandex cold or warm, inside out, and dry flat or on a low setting. High heat degrades elastane and reduces recovery, which is why hot tumble drying shortens the life of any stretch garment. Avoid fabric softener, which coats the fibre and slows wicking.