For athletic wear, do not choose a factory only by price. The real production risks are usually:
- Poor stretch recovery after washing
- Leggings becoming see-through
- Weak seams in high-stress areas
- Inconsistent sizing across reorders
- Unclear MOQ and sampling costs
- Supplier acting as a reseller instead of a manufacturer
For startup brands, prioritize low MOQ, sampling support, private label service, and clear communication. For growing brands, focus on repeatability, size grading, fabric consistency, and reorder speed. For established retailers, ask for quality documents, inspection standards, compliance information, and production capacity.
Note: Some companies below are U.S.-based manufacturers, while others are U.S.-serving custom apparel manufacturers. Always verify whether your order will be produced in the USA, offshore, or through partner factories before placing a bulk order.
Manufacturer Overview List
- 1.Wearzio – Custom athletic wear manufacturer for private label brands
- 2.Lefty Production Co. – Los Angeles activewear and apparel manufacturer
- 3.ARGYLE Haus of Apparel – Full-package apparel manufacturer in Los Angeles
- 4.Euphoric Colors – Los Angeles cut-and-sew apparel manufacturer
- 5.Royal Apparel – Made-in-USA apparel manufacturer for activewear basics
- 6.Stylus Apparel – Custom Made-in-USA apparel manufacturer
- 7.Steve Apparel – Custom activewear and private label clothing manufacturer
- 8.Zega Apparel – Custom sportswear and activewear manufacturer
- 9.Affix Apparel – Private label activewear and sportswear manufacturer
- 10.Teamwork Athletic Apparel – USA sports uniform and teamwear manufacturer
1. Wearzio – Custom Athletic Wear Manufacturer for Private Label Brands
Wearzio is a custom athletic wear manufacturer serving activewear startups, gym clothing brands, yoga wear labels, and private label retailers. It is suitable for brands that need help with OEM/ODM development, fabric selection, logo application, custom labeling, and bulk production. Wearzio is especially relevant for brands building full activewear collections rather than only buying blank apparel.
Key Products
- Custom leggings
- Sports bras
- Gym tops and tank tops
- Joggers, tracksuits, and activewear sets
Pros
- Strong focus on activewear, gym wear, and yoga wear
- Supports private label branding, including logos, labels, and packaging
- Suitable for startups that need OEM/ODM guidance
- Good for coordinated collections such as leggings + sports bras + tops
- Useful for brands that do not have a complete internal production team
Cons
- Exact USA production location needs verification
- MOQ and sampling cost should be confirmed directly
- Not ideal for retailers only looking for blank wholesale inventory
- Custom fabric development may require higher volume
Official Website
2. Lefty Production Co. – Los Angeles Activewear and Apparel Manufacturer
Lefty Production Co. is a Los Angeles-based apparel manufacturer that works with startups, fashion brands, and consumer product companies. For athletic wear brands, it can support product development, sourcing, cut-and-sew production, and production management. It is a good option when a brand wants closer communication, faster sampling feedback, and access to the Los Angeles manufacturing ecosystem.
Key Products
- Activewear tops
- Leggings and stretch bottoms
- Athleisure apparel
- Swimwear and lifestyle sportswear
Pros
- Located in Los Angeles, useful for U.S. brands needing local development
- Supports sampling, sourcing, and production coordination
- Good for startups moving from idea to first production run
- Easier communication than many offshore-only factories
- Suitable for premium and mid-market activewear collections
Cons
- U.S. production usually means higher unit cost
- MOQ depends on product type and complexity
- Not ideal for ultra-low-cost gym basics
- Technical fabric availability should be checked during sampling
Official Website
https://www.leftyproductionco.com/
3. ARGYLE Haus of Apparel – Full-Package Apparel Manufacturer in Los Angeles
ARGYLE Haus of Apparel is a Los Angeles-based full-package apparel manufacturer offering design development, pattern making, sample making, grading, marking, sourcing, and production. It is suitable for activewear and athleisure brands that need structured product development before moving into bulk manufacturing. This is a better fit for brands that value process control, fit refinement, and premium construction.
Key Products
- Athleisure collections
- Stretch tops and bottoms
- Custom sportswear
- Cut-and-sew apparel
Pros
- Provides full-package manufacturing support
- Good for brands without an in-house product development team
- Supports pattern making, grading, sourcing, and production
- Los Angeles location helps with sample review and communication
- Suitable for premium small-to-medium production runs
Cons
- More expensive than offshore mass production
- Not ideal for low-margin discount activewear
- Clear tech packs and design direction are still important
- Bulk capacity should be confirmed early
Official Website
4. Euphoric Colors – Los Angeles Cut-and-Sew Apparel Manufacturer
Euphoric Colors is a Los Angeles apparel manufacturer offering services such as cut and sew, pattern making, grading, sample making, fabric sourcing, and apparel production. It is suitable for brands developing activewear, athleisure, streetwear, and lifestyle apparel that require a local production partner. For activewear brands, Euphoric Colors can be useful when the project needs hands-on development, especially for early-stage collections.
Key Products
- Cut-and-sew activewear
- Athleisure tops and bottoms
- Custom apparel collections
- Private label clothing
Pros
- Real Los Angeles-based apparel manufacturing service
- Offers pattern, sample, grading, and production support
- Suitable for brands that need local development before scaling
- Good for small-to-medium custom apparel projects
- Useful for founders who need help translating ideas into production-ready garments
Cons
- Activewear-specific machinery and seam options should be verified
- Higher cost than offshore manufacturing
- MOQ and lead time are project-dependent
- Not ideal for brands needing very large-volume, low-cost production
Official Website
https://www.euphoriccolors.com/
5. Royal Apparel – Made-in-USA Apparel Manufacturer for Activewear Basics
Royal Apparel is a U.S. apparel manufacturer known for Made-in-USA, wholesale, private label, organic, and eco-friendly apparel. While it is not a technical seamless activewear factory, it is highly relevant for brands needing activewear basics, such as tees, tanks, fleece, joggers, and casual athleisure items. It is a strong option for retailers that want domestic production, blank apparel, or private label basics.
Key Products
- T-shirts and tank tops
- Joggers and fleece
- Athleisure basics
- Organic and recycled apparel
Pros
- Offers Made-in-USA apparel options
- Good for activewear basics and athleisure staples
- Supports private label and wholesale apparel programs
- Useful for brands needing faster replenishment than overseas production
- Offers sustainable fabric options, including organic and recycled materials
Cons
- Not focused on technical leggings or compression sports bras
- Limited for highly engineered performance activewear
- Pricing may be higher than imported blank apparel
- Inventory and color availability should be checked before planning a collection
Official Website
6. Stylus Apparel – Custom Made-in-USA Apparel Manufacturer
Stylus Apparel is a custom apparel manufacturer offering Made-in-USA production, private label services, and custom garment programs. For athletic wear brands, it is most relevant for gym tops, tanks, hoodies, joggers, sweatshirts, and casual sportswear. It is a practical option for brands that want domestic manufacturing and branded active lifestyle apparel.
Key Products
- Custom athletic tops
- Gym tanks and tees
- Hoodies and sweatshirts
- Joggers and casual sportswear
Pros
- Offers Made-in-USA custom apparel manufacturing
- Useful for fitness brands, gym merchandise, and private label programs
- Supports branding details such as labels, tags, and finishing
- Good for activewear basics and lifestyle sportswear
- Domestic production can reduce shipping and communication issues
Cons
- Less suitable for advanced compression leggings or seamless garments
- U.S. production costs are higher than offshore manufacturing
- MOQ varies by garment and customization level
- Performance fabric options should be confirmed before development
Official Website
7. Steve Apparel – Custom Activewear and Private Label Clothing Manufacturer
Steve Apparel is a custom clothing manufacturer offering private label manufacturing for several categories, including sportswear, activewear, streetwear, and fitness apparel. It is suitable for brands that need custom colors, logos, labels, packaging, and style modifications. Steve Apparel is often considered by startups because it supports both apparel development and private label customization.
Key Products
- Custom sportswear
- Gym apparel
- Tracksuits and joggers
- Private label activewear
Pros
- Offers custom activewear and sportswear manufacturing
- Supports private label branding
- Suitable for startups needing design-to-production support
- Can handle multiple apparel categories beyond activewear
- Useful for brands building a full fitness lifestyle collection
Cons
- Production location should be verified per order
- Broad category focus may be less specialized than technical activewear factories
- MOQ, pricing, and timeline depend on project complexity
- Advanced performance features require detailed technical discussion
Official Website
8. Zega Apparel – Custom Sportswear and Activewear Manufacturer
Zega Apparel is a custom apparel manufacturer offering private label and custom manufacturing services for categories including sportswear, activewear, fitness wear, streetwear, and casual apparel. It is a good fit for brands looking for flexible customization, especially when launching branded gym wear, tracksuits, hoodies, and activewear basics.
Key Products
- Custom activewear
- Sportswear sets
- Gym hoodies and joggers
- Private label fitness apparel
Pros
- Offers custom sportswear and activewear manufacturing
- Supports private label services such as labels and packaging
- Good for brands needing multiple apparel categories
- Suitable for fitness lifestyle collections
- Useful for startups requiring flexible product development
Cons
- Exact production location should be verified before order placement
- Not ideal for highly technical performance wear
- MOQ and delivery timelines vary by style
- Fabric quality must be validated through physical samples
Official Website
9. Affix Apparel – Private Label Activewear and Sportswear Manufacturer
Affix Apparel is a custom clothing manufacturer offering private label apparel manufacturing, including activewear, sportswear, streetwear, fitness apparel, and lifestyle garments. It is suitable for brands that want branded products but may not yet have a full internal sourcing team. Affix Apparel can be considered for gym wear, sportswear basics, tracksuits, hoodies, and private label active lifestyle products.
Key Products
- Private label activewear
- Sportswear and fitness apparel
- Tracksuits and joggers
- Custom hoodies and tops
Pros
- Offers private label clothing manufacturing
- Suitable for startup and mid-size apparel brands
- Supports branding elements such as custom labels and packaging
- Good for active lifestyle and gym merchandise collections
- Can help brands build broader apparel assortments
Cons
- Need to verify whether production is USA-made or globally sourced
- Not as specialized in technical activewear as performance-only factories
- MOQ, fabric options, and sampling timelines require confirmation
- Quality consistency should be checked with pre-production samples
Official Website
10. Teamwork Athletic Apparel – USA Sports Uniform and Teamwear Manufacturer
Teamwork Athletic Apparel is a U.S.-based athletic apparel company specializing in custom team uniforms, sportswear, and performance apparel. It is especially relevant for retailers, schools, clubs, and teamwear brands that need custom sports apparel rather than fashion-oriented athleisure. For businesses focused on team sports, uniforms, and athletic programs, Teamwork is a more category-specific option than many general apparel factories.
Key Products
- Custom team uniforms
- Performance sports jerseys
- Training apparel
- Athletic shorts and teamwear
Pros
- Strong focus on sports uniforms and athletic apparel
- Suitable for teams, clubs, schools, and sports retailers
- Better category fit for performance teamwear than general apparel factories
- Offers customization for team names, numbers, colors, and graphics
- Good option for repeat programs and seasonal team orders
Cons
- Less suitable for fashion-led yoga wear or lifestyle athleisure
- Not ideal for brands needing premium leggings or sports bras
- MOQ, decoration methods, and production lead time should be verified
- Product direction is more teamwear-focused than DTC activewear fashion
Official Website
https://www.teamworkathletic.com/
How to Choose the Right Athletic Wear Manufacturer in the USA
For Startup Activewear Brands
If you are launching your first collection, avoid starting with 20+ SKUs. A practical first drop is usually:
- 2–3 leggings or bottoms
- 1–2 sports bras or tops
- 1 hoodie, jogger, or lifestyle piece
Focus on:
- MOQ around 50–300 pieces per style, if available
- Fast sampling and clear revision process
- Fabric swatches before sample approval
- Private label support for neck labels, care labels, hang tags, and packaging
- Clear landed cost, including freight if production is not domestic
Best-fit options:
- Wearzio
- Euphoric Colors
- Stylus Apparel
- Steve Apparel
- Zega Apparel
For Growing Brands
If your brand already has sales data, your priority should shift from “Can they make it?” to “Can they repeat it?”
Check carefully:
- Size grading consistency
- Fabric shrinkage after wash
- Color consistency between batches
- Seam strength on stretch areas
- Reorder lead time
- Defect replacement policy
Best-fit options:
- Lefty Production Co.
- ARGYLE Haus of Apparel
- Wearzio
- Affix Apparel
- Royal Apparel
For Established Retailers
Established brands and retailers need stronger production control.
Require:
- Written quality standards
- Pre-production sample approval
- Measurement tolerance chart
- Fabric test reports
- In-line and final inspection
- Production calendar
- Backup supplier plan
Best-fit options:
- ARGYLE Haus of Apparel
- Lefty Production Co.
- Royal Apparel
- Teamwork Athletic Apparel
- Stylus Apparel
Manufacturer Verification Checklist
Before placing a bulk order, ask each manufacturer:
- Are you a manufacturer, broker, sourcing company, or distributor?
- Will my order be produced in the USA or overseas?
- What is your MOQ per style, color, and size?
- Do you handle pattern making, grading, and tech packs?
- Can you sew stretch fabrics with flatlock, coverstitch, or activewear-specific machines?
- Can you provide fabric composition and test reports?
- What is your sample lead time?
- What is your bulk production lead time?
- What happens if garments fail inspection?
- Do you support woven labels, heat transfer labels, hang tags, and custom packaging?
Conclusion
This revised list removes the questionable entries and replaces them with more verifiable manufacturers or manufacturing-focused companies. For custom activewear startups, start with Wearzio, Euphoric Colors, Stylus Apparel, Steve Apparel, or Zega Apparel. For brands needing stronger U.S.-based development, consider Lefty Production Co. and ARGYLE Haus of Apparel. For athletic basics and Made-in-USA programs, Royal Apparel is a practical choice. For team sports and uniforms, Teamwork Athletic Apparel is the most category-specific option.
Before starting bulk production, order samples, test fabric stretch and wash performance, confirm the real production location, and sign a written quality agreement covering measurements, defects, packaging, labels, and delivery timeline.
