Sports Bra Construction: Support Levels, Materials and Fit for Manufacturers
Sports bras fail on support, not style. Here is how support levels are engineered, what materials each requires, and how to spec them for your market.
Support is the product in a sports bra. A sports bra that looks good but bounces will not survive its first review cycle. Support is engineered through construction and materials — here is what to specify.
Three Support Levels
| Level | Construction | Use case |
|---|---|---|
| Light | Single layer, minimal elastic, thin straps | Yoga, pilates, daily wear |
| Medium | Lined cups, wider band, adjustable straps | Training, cycling, studio |
| High | Encapsulation, molded cups, wide band, hook closure | Running, HIIT, high-impact |
The Critical Components
- Bottom band — provides 70% of support; must not roll
- Straps — wide distributes load; adjustable adds range
- Cups — removable pads are cheaper; molded cups support better
- Fabric — nylon-spandex for softness, polyester-spandex for wicking
Fit Testing Checklist
- Band stays flat when arms raise
- No breast tissue escapes at sides or top
- Straps do not dig or slide
- Bounce test at impact level of intended activity
- Test across the full size range — not one fit model
Common Manufacturing Failures
- Band elastic too weak for the cup size range
- Straps attached with insufficient reinforcement
- Padding pockets sewn shut accidentally
- Inconsistent cup placement across sizes
Planning a sports bra line? Send us your support-level requirements.
Product Overview
A supportive sports bra built for high-impact training and everyday comfort. Manufactured in our Yiwu facility for private-label and wholesale programmes with consistent sizing across production runs.
Fabric & Performance
- Nylon-spandex blend with strong elastic recovery
- Moisture-wicking and fast drying
- Breathable knit that stays cool during training
- Opaque, non-see-through construction
Design Details
- Supportive structure for medium to high impact activity
- Removable padded cups for shape and coverage
- Adjustable straps for a personalised fit
- Wide underband distributes pressure evenly
- Flatlock seams reduce irritation
Recommended Use
Designed for yoga, running, HIIT, cycling and gym training, and comfortable enough for all-day wear under casual layers.
Sizing & Fit
Available across a full size range with a supportive athletic fit. Custom size grading available on request.
OEM & ODM Customization
- Custom logo placement and technique
- Private label and branded packaging
- Custom colour matching and fabric weight
- Low MOQ with fast sampling
Production & Shipping
Produced in-house with controlled quality checks at every stage. Bulk orders ship by express, air or sea freight with full export documentation.
Ready to Source
Share your quantity, colourway and target price for a bulk quote. Contact the factory to start.