YXLP · Style development guide
Performance Underwear: OEM Development for Sports Brands
Performance underwear is built around fabric and construction choices that aim to manage moisture, limit chafing and stay in place during movement. Buyers and wearers expect proof for claims such as moisture-wicking or anti-odour, so this brief puts testing and claims at the centre.
Updated October 4, 2026
Who this style suits
- Running, training and cycling brands
- Outdoor and workwear ranges
- Brands positioning on anti-chafe
- Team and club programs with logo requirements
Start with the use case
A running garment, a gym garment and a cycling garment need different leg lengths, pouch supports and fabrics. Write a one-line use case and the wearing conditions — heat, duration and layering — and let that drive the specification.
Fabric and panel construction
Performance fabrics are usually polyester or nylon with elastane, often with mesh panels in high-heat areas. Panelled construction adds pattern pieces and seam decisions: flatlock seams for low-profile joins, bonded edges, and silicone grippers at the hem. Specify where mesh is used and the seam type for each join.
Claims need evidence
Statements such as moisture-wicking, quick-dry, antimicrobial or odour-control are performance claims. Ask for fabric test reports using methods your market recognises — for example AATCC TM195 (liquid moisture management), TM197 (vertical wicking) or TM79 (absorbency) — and ask your lab which method matches each claim you intend to make. Keep the reports with your listing evidence.
Do not print a claim on packaging until evidence exists for the finished fabric, because treatments can change with finishing and washing. Antimicrobial and odour-control claims are regulated in several markets, so take advice before using them.
Compression, fit and size
“Compression” has no universal definition for underwear. If you want a snug, supportive fit, specify the finished measurements at relaxed and stretched states and the fit-test method rather than relying on a label. Test on real wearers in motion.
Specification options to choose from
These are the choices to settle in your brief. Measurements and size ranges are market conventions, not fixed rules; supply your own where they differ. Availability, minimums and cost for your selection are confirmed in the quotation.
| Item | Options |
|---|---|
| Fabric | Polyester or nylon with elastane; mesh inserts where needed |
| Leg length | Mid to long, as the use case requires; finished inseam you specify |
| Seams | Flatlock, bonded or cover-stitched, chosen by area |
| Hem | Silicone gripper, bonded edge or cover-stitched hem |
| Pouch support | Contoured pouch, ventilated pouch or panel-built support |
| Branding | Heat transfer, silicone print, printed or woven waistband logo, reflective detail |
| Treatments and claims | Moisture-management or odour-control finishes only with test evidence for the finished fabric |
| Packaging | Single polybag, header card, retail box or multipack |
| Sizes | Your size chart; alpha range S–XXL or a wider run |
Fabric directions and what to watch
| Fabric | Suits | Watch for |
|---|---|---|
| Polyester-elastane jersey | Training and everyday performance | Odour retention varies by yarn and finish; evidence needed for odour claims |
| Nylon-elastane jersey or seamless knit | Smooth, high-stretch performance fits | Heat sensitivity during finishing; recovery after repeated washing |
| Polyester mesh | Ventilation panels at sides or back | Snagging; seam finish where mesh meets jersey |
For a wider comparison see the fabric comparison guide.
What to send for a quotation
- One-line use case and wearing conditions
- Reference garment and finished-measurement targets
- Where mesh panels sit and which seam type joins them
- Hem treatment: gripper, bonded or cover-stitched
- Claims you want to make, and the test reports you will need
- Logo method and any reflective or heat-transfer requirements
- Size chart; quantity split; packaging
Mistakes to avoid
- Printing “moisture-wicking” or “anti-odour” before test evidence exists.
- Describing fit as “compression” without a measurement or test method.
- Choosing seams for appearance only and not testing them against chafing.
- Approving a heat-transfer logo without a wash test.
Common buying questions
Can you add reflective logos or details?
Reflective heat-transfer details are a branding option. Confirm placement and wash durability on the sample before bulk.
Do you provide test reports for performance claims?
Tell us which reports you need in your brief. We confirm which can be arranged for your fabric and order before you commit; test arrangements and costs are stated with the order.
Can I use my existing fabric supplier?
Raise it in the brief. Using a nominated fabric affects sourcing and the minimum order, and we confirm what is workable for your project.