Custom Seamless & Ribbed Sports Bra Manufacturer

As a specialist seamless sports bra manufacturer, we create comfortable, supportive, and stylish bras for modern activewear brands. From ribbed seamless bralettes to padded sports bras, we are your private label partner.

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Seamless Sports Bras

Seamless Support, Unmatched Comfort

Second-Skin Comfort

Chafe-Free Seamless

Our seamless knitting process eliminates irritating seams, providing a smooth, second-skin feel for all-day comfort.

Integrated Bra Support

Flattering Ribbed Texture

We specialize in on-trend ribbed seamless bras that offer a stylish, textured look while providing gentle, flexible support.

High-Impact Support System

Integrated Padding & Support

Our designs include options for removable or fixed pads, creating a smooth shape and providing light to medium support.

On-Trend Cropped Silhouettes

Body-Contouring & Sculpting

We engineer knit structures with varying compression zones to provide targeted support and a flattering, sculpted fit.

In-Depth Customization: Create Your Perfect Custom Seamless Sports Bra

Your brand is unique, and your products should be too. Explore the possibilities below.

Fabric & Materials

Select from our extensive library of premium performance fabrics, or work with us to develop a custom material.
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Fit & Construction

Define the core structure of your sports garment, from the silhouette and fit to the seams and construction techniques.
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Features & Functionality

Incorporate functional elements that add value and meet your customers’ specific needs.
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Color & Finishing

Choose from a limitless color palette with Pantone® matching, and explore various finishes and treatments.
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Branding & Logos

Apply your brand identity with a range of high-quality techniques for a professional finish.
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Start Your Custom Seamless Sports Bras in 4 Simple Steps

Our streamlined process makes bringing your custom activewear line to life straightforward and efficient.
Inquiry & Consultation

Inquiry & Consultation

Design & Sampling

Design & Sampling

Bulk Production & QC

Bulk Production & QC

Shipping & Delivery

Shipping & Delivery

From Fabric to Final Sportwear Garment

We combine meticulous planning with advanced technology and strict quality control at every stage of production.

Your Premier Seamless Sports Bra Manufacturer for Custom & Wholesale

As a leading seamless sports bra manufacturer, Sansansun specializes in creating comfortable and supportive activewear tops. Our expertise covers the most popular styles, including the trendy ribbed seamless bralette and functional seamless padded sports bra. We utilize advanced knitting technology to create ribbed seamless bra designs that are both stylish and supportive, making us a top choice for brands seeking premium, modern sports bras.

We are the ideal partner for your brand’s activewear collection. We offer comprehensive private label services for creating custom seamless sports bras tailored to your vision, as well as flexible wholesale programs. As an experienced factory, we are committed to delivering the highest quality construction and on-trend designs for your brand’s success.
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Flexible MOQ & Sourcing

Flexible MOQ & Sourcing

From 30-piece wholesale orders for market testing to fully custom production runs, our flexible MOQ policy is designed to support your brand's growth.

Scale & Factory-Direct Pricing

Scale & Factory-Direct Pricing

Leverage our 600,000+ piece monthly capacity. Our scale and factory-direct model ensure you receive competitive pricing, maximizing your profit margins.

One-Stop Solution

One-Stop Solution

Go beyond manufacturing. Our solution includes precision strategic consulting and access to 800+ new annual styles for a faster, smarter launch.

Quality Guarantee

Quality Guarantee

Your products are backed by our rigorous multi-stage QC process, from incoming fabric inspection to a 100% final garment check.

Ready to Launch Your Next Best-Selling Collection?

Work with a partner who brings design, speed, and reliability together. We’ve helped 200+ growing brands launch faster, scale smarter, and win in their markets. You could be next.