Best Fabric for Leggings and Sports Bras: Matte Nylon Spandex, Compression Fabric, and Activewear Stretch
Leggings and sports tops form the core of the activewear market — whether you're building a fitness brand or sewing for individual clients. The key fabric decision comes down to three main options: matte nylon spandex (or polyester spandex) for fitted, compression-focused styles; activewear jersey with polyester and spandex (elastane) for lighter stretch; and power mesh for panels and sports bras. Each has its place depending on the intended activity — gym training, yoga, running, or CrossFit. GSM and fiber content vary accordingly. Here's a full breakdown tied to end use.
What You Can Make from Activewear Stretch Fabrics
Leggings and sports tops cover a wide range of garment types. Each has its own fabric requirements.
Basic yoga and Pilates leggings. Matte nylon spandex at 220–260 GSM with 14–18% spandex (elastane), or activewear jersey at 200–240 GSM with 6–8% spandex. Comfortable, non-restrictive fit for long stretch-based sessions.
Compression leggings for running and gym training. Matte nylon spandex at 260–280 GSM with 18–22% spandex. Provides muscle support, stays in place during dynamic movement, and wicks moisture effectively.
CrossFit and strength training leggings. Compression-grade nylon spandex at 260–300 GSM with 20–22% spandex. High compression, secure fit, and squat-proof performance under heavy loading.
Bike shorts and cycling-style shorts. Matte nylon spandex at 240–280 GSM with 18–22% spandex, optionally combined with a compression panel insert.
Lightly supportive sports tops. Matte nylon spandex at 220–260 GSM with 14–18% spandex. Frequently combined with a power mesh panel at the cup area.
Sports bras with push-up or compression shaping. Matte nylon spandex at 260–280 GSM with 18–22% spandex, plus power mesh at 180–220 GSM in compression zones.
Rash guards for gym and swimming. Dense matte nylon spandex at 240–280 GSM with UPF 50+ UV protection. Covered in detail in the upcoming guide "Fabric for Rash Guards and Swimwear."
Fitted sports dresses and training silhouettes. Activewear jersey at 200–240 GSM with 90–94% polyester and 6–8% spandex.
Thermal winter leggings. Heavyweight nylon spandex at 280–310 GSM, or nylon spandex with a brushed fleece backing. Designed for cooler weather and outdoor training.
Types of Fabric for Leggings and Tops
Three primary fabric categories, each with different stretch characteristics and fiber compositions.
Matte nylon spandex. A 4-way stretch, two-way knit at 200–320 GSM with 12–22% spandex (elastane). The go-to legging fabric for fitted, compression-grade activewear. Non-reflective surface performs well under studio lighting and doesn't create a plasticky appearance against skin. Suitable for everyday sport and training swimwear.
Activewear jersey with spandex. A weft-knit fabric at 200–260 GSM with 90–96% polyester and 4–10% spandex (elastane). More versatile than pure nylon spandex — works well for lightweight leggings, sports dresses, and bike shorts. Generally more affordable at comparable GSM weights.
Power mesh. A firm, high-compression knit mesh at 180–250 GSM with 18–25% spandex. Used in shaping panels within leggings, sports bra cups, corset-style inserts, and compression zones in tops. Covered in detail in the guide "Activewear Fabrics: How to Choose."
Lightweight sports mesh. A thin, breathable mesh at 50–100 GSM used for ventilation panels in leggings and sports tops.
For a comparison with lingerie fabrics, see the guide "Lingerie Fabrics."
Comparison Table
Parameter
Nylon Spandex 240
Nylon Spandex 280
Sport Jersey 210
Sport Jersey 260
Power Mesh 220
GSM
220–260
260–300
200–220
240–280
180–250
Spandex content
14–18%
18–22%
4–6%
6–10%
18–25%
Stretch
50–60%
60–80%
30–40%
40–50%
60–80%
Compression level
Medium
High
Low
Medium
Very high
Best for
Yoga, Pilates
Running, gym, CrossFit
Basic leggings
Denser leggings, bike shorts
Shaping panels, bras, inserts
Fiber composition
PES+EL or PA+EL
PES+EL or PA+EL
PES+EL
PES+EL
PES+EL
Wholesale price
Budget–mid range
Mid range
Budget
Budget–mid range
Budget–mid range
Matte nylon spandex is the primary choice for fitted, high-compression styles. Activewear jersey is the more affordable option for lightweight leggings and sports dresses. Power mesh should be reserved for shaping and compression zones only.
Choosing the Right GSM for Your Activity Level
GSM selection depends on sport type and training intensity.
200–220 GSM (lightweight nylon spandex or activewear jersey). Leggings for yoga, Pilates, home workouts, and light jogging. Comfortable in warm conditions, soft and non-restrictive fit.
220–240 GSM (lightweight to mid-weight nylon spandex or denser sport jersey). A versatile all-rounder for gym sessions, moderate running, and cycling. This is the most widely used activewear GSM range for everyday performance.
240–260 GSM (mid-weight nylon spandex). Compression leggings for running and CrossFit. Provides meaningful muscle support during high-movement activity.
260–280 GSM (heavyweight nylon spandex). Professional-grade leggings for heavy training, compression bike shorts, and supportive sports bras.
280–310 GSM (compression-grade nylon spandex). Thermal winter leggings, heavy-duty rash guards for surfing, and strength training. The densest weight for regular athletic use.
What the Fiber Content Should Look Like
Fiber composition determines how a fabric performs under load and how it holds up over a season of washing.
Polyester 80–94%. The primary fiber in entry-level and mid-range activewear. Cost-effective, durable, and moisture-wicking. Polyester-spandex is the standard blend for mass-market sportswear and branded merchandise.
Nylon (polyamide) 80–85%. The premium option. Softer against skin, more resistant to chlorine and UV exposure, and smoother-feeling than polyester. Preferred for rash guards, swimwear, and premium-tier leggings. Typically 30–50% more expensive than polyester equivalents.
Spandex (elastane) 14–25%. The spandex percentage determines compression level. 14–18% is appropriate for everyday stretch in leggings and sports tops. 18–22% is standard for compression-grade styles. 22–25% is used in shaping underwear and power mesh.
Lycra by Invista. A premium spandex brand that maintains shape through 200+ washes. Budget spandex alternatives typically degrade within 30–50 wash cycles. Premium manufacturers list "Lycra" explicitly on product descriptions — it's a meaningful quality indicator.
What to avoid. Rayon (viscose) in activewear fabric — it absorbs moisture and dries slowly, making it poorly suited to athletic use. Spandex content below 10% — insufficient to maintain shape through deep squats or extended movement sessions.
For a detailed look at fabric treatments (Coolmax, Cool-Touch, antimicrobial, DWR), see the guide "Activewear Fabrics."
How Much Fabric You Need Per Garment
Standard roll width for nylon spandex is 150–160 cm (59–63 in), activewear jersey 165 cm (65 in), and power mesh 100–150 cm (39–59 in). Yardage varies depending on production scale.
Individual / made-to-measure cuts:
Production run of 10–50 units in one style:
Production runs of 100+ units: expect a further 5–10% reduction in fabric consumption through optimised multi-size cutting layouts.
Waistband: typically cut from the same nylon spandex or power mesh, 8–12 cm (3–5 in) wide.
Fabric allowance. Add 12–15% for individual garments and 5–10% for batch production. Nylon spandex must be cut with the stretch running across the width of the roll (crosswise grain), not along the length.
Pricing: Wholesale vs. Retail
Retail pricing through general fabric marketplaces and independent suppliers. Matte nylon spandex typically retails at $8–$15 per metre (approximately $7–$14 per yard) depending on GSM, fiber content, and supplier. Activewear jersey generally retails at $6–$11 per metre. Power mesh at $5–$9 per metre. Prices vary significantly by region and supplier tier.
Wholesale pricing direct from suppliers. Matte nylon spandex at 220–240 GSM starts from around $4–5/m at wholesale; 260–280 GSM from $5–6/m; 300–310 GSM from $6–7/m. Activewear jersey at 200–220 GSM from approximately $3–4/m; 240–260 GSM from $3.50–4.50/m. Power mesh at 180–220 GSM from roughly $3.50–4/m. Premium nylon spandex with FDY (Fully Drawn Yarn) construction commands a meaningful premium above standard grades. All wholesale pricing is approximate and will vary by supplier, country of origin, and order volume.
For a run of 10 pairs of mid-market leggings requiring 10–12 m of nylon spandex, wholesale fabric cost is relatively modest. At typical retail price points, gross margin before platform fees and fulfilment runs at 200–250% — though net margins depend heavily on your sales channel and overheads.
For a run of 10 pairs of premium nylon spandex leggings, fabric costs are higher, but retail pricing in a direct-to-consumer brand context can support 100–150% net margins with significantly stronger customer retention and repeat purchase rates.
Fabric Recommendations by Garment Type
Basic yoga and Pilates leggings, everyday sports tops: matte nylon spandex 260 GSM, 88% polyester / 12% spandex (elastane), white. The reliable industry standard for mass-market activewear.
Professional compression leggings for running and strength training, heavyweight rash guards: matte nylon spandex 310 GSM, 86% polyester / 14% spandex, white. High-compression legging fabric for high-intensity training.
Budget entry-level leggings and sports tops for mass-market production: jersey 210 GSM, 96.5% polyester / 3.5% spandex, white. A lightweight stretch base fabric for affordable styles.
Sports dresses, lightly compressive leggings, and volume activewear production: jersey 260 GSM, 94% polyester / 6% spandex, white. A denser stretch jersey for structured performance styles.
Ventilation panels, sports top linings, sports bra cup panels: knit mesh 60 GSM, 150 cm (59 in) wide, black. Lightweight breathable mesh for airflow zones.
Browse the full range of stretch fabrics in the Swimwear & Activewear category, matte nylon spandex in the dedicated subcategory, and activewear jersey in the Jersey category. Related guides: "Activewear Fabrics," "Matte vs. Shiny Nylon Spandex," and "Understanding GSM in Jersey Fabrics."
Common Mistakes When Choosing Activewear Fabric
A few recurring errors when sourcing fabric for sportswear production.
Using standard jersey without spandex for leggings. Jersey without spandex (elastane) will bag out at the knees within a month of active wear. Leggings require either a dedicated Lycra fabric or jersey with a minimum of 6–8% spandex content.
Using lightweight 200 GSM nylon spandex for running leggings. Fabric this light will slip down during a run and provides no meaningful muscle compression. For running, the minimum is 240 GSM with 18–22% spandex.
Sewing compression leggings from nylon spandex with only 12% spandex. Insufficient spandex content means the fabric won't deliver the recovery force needed for compression. Compression styles require a minimum of 18–22% spandex.
Cutting nylon spandex along the length of the roll rather than across the width. The primary stretch in nylon spandex runs across the width (crossgrain). Cutting lengthwise produces stiff, non-functional leggings that lose their shape within an hour of wear.
Using polyester nylon spandex for pool swimwear. Polyester degrades rapidly with chlorine exposure. A full season of regular swimming will cause significant colour loss and loss of elasticity. For pool use, always specify nylon (polyamide) with spandex.
Washing activewear with fabric softener. Fabric softener clogs the pores of spandex fibres. After 10–15 washes, the garment loses its compression properties noticeably. Use a specialist sportswear detergent with no softening agents.
Ordering fabric with no allowance buffer. Nylon spandex must be cut on the crossgrain only, and offcuts cannot be used in seams. Allow 5–10% extra for production runs, and 12–15% for individual garment cutting.
Frequently Asked Questions
What is the best fabric for leggings? Matte nylon spandex at 240–280 GSM with 18–22% spandex (elastane). For professional compression leggings, 260–300 GSM. Fiber composition: polyester plus spandex for mid-market; nylon (polyamide) plus spandex for premium.
Can leggings be made from activewear jersey? Yes — but only activewear jersey with 6–10% spandex at 200–260 GSM. Standard cotton jersey without spandex will not hold its shape. For high-intensity sport, nylon spandex remains the better performer.
What is the difference between activewear jersey and regular jersey? Activewear jersey contains 90–94% polyester and 4–10% spandex. Regular jersey is predominantly cotton with minimal or no spandex. Activewear jersey dries faster, resists stretch deformation, and is purpose-built for leggings and performance styles.
What fabric should I use for a sports bra? Matte nylon spandex at 260–280 GSM with 18–22% spandex, plus power mesh at 180–220 GSM in compression zones. Fiber composition: nylon (polyamide) or polyester with spandex.
How much fabric do I need for leggings? For individual sewing: 1.2–1.4 m (1.3–1.5 yd) for basic leggings, 1.3–1.5 m (1.4–1.6 yd) for compression styles. For production batches of 10–50 units, plan on 1.0–1.2 m (1.1–1.3 yd) per pair. The waistband is cut from the same nylon spandex or power mesh.
What fabric works best for yoga leggings? Matte nylon spandex at 220–260 GSM with 14–18% spandex, or activewear jersey at 200–220 GSM with 6% spandex. Non-restrictive for long holds and deep stretches.
Can rayon (viscose) be used in activewear? No. Rayon absorbs moisture and dries slowly — both serious drawbacks in athletic garments. Activewear fabric should be polyester-based or nylon-based with spandex.
What is the difference between nylon spandex fabric and Lycra? Nylon spandex (or polyester spandex) is a knit fabric construction. Lycra is a brand name for spandex (elastane) fiber, owned by Invista. High-quality nylon spandex fabrics often contain Lycra-branded elastane — premium manufacturers state this explicitly in product listings. A detailed comparison is covered in the upcoming guide "Nylon Spandex vs. Lycra: What's the Difference?"
Where should I source activewear fabric? Turkish and Italian mills for premium-grade fabric; Chinese and international distributors for mid-market and mass-market production. Minimum order quantities typically start from one roll (approximately 50–80 m) per colourway at wholesale.
Can nylon spandex be used for everyday casualwear? Yes — particularly for athleisure styles: fitted dresses, street-style leggings, and sports tops styled for everyday wear. For conventional casualwear, nylon spandex is generally too form-fitting.