Custom Plus-Size Activewear & Sports Bra Manufacturer

As a specialist plus-size activewear manufacturer, we engineer supportive and comfortable apparel that inspires confidence. We are experts in creating sports bras for large breasts and complete private label plus-size collections.

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Plus-Size Activewear

Engineered for a Perfect, Supportive Fit

High-Impact Support System

High-Support Construction

Our specialty is the high-support sports bra for large breasts, using encapsulation and compression to eliminate bounce.

On-Trend Cropped Silhouettes

Fit-Tested Plus-Size

Our patterns are developed and tested on plus-size models to ensure a true-to-size, comfortable, and flattering fit—no more rolling waistbands.

Performance for All Bodies

Performance for All Bodies

We use premium, moisture-wicking, and squat-proof fabrics that offer both support and breathability for plus-size athletes.

Engineered for Larger Busts

Thoughtful, Functional Design

We incorporate practical details like wider straps, comfortable underbands, and strategic paneling for an enhanced wearing experience.

In-Depth Customization: Create Your Perfect Custom Plus-Size Activewear

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 Plus-Size Activewear 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 Plus-Size Activewear Manufacturer & Sports Bra Supplier

As a leading plus-size activewear manufacturer, Sansansun is dedicated to creating inclusive sizing solutions. Our primary expertise is in engineering the best sports bra for large breasts, offering high-impact sports bras for plus-size women that provide unparalleled support. We produce a full range of apparel, from leggings to tops, all designed with the fit and functional needs of the plus-size customer in mind.

We are the ideal production partner for inclusive brands. We offer a comprehensive private label service to develop your unique plus-size sports bra and activewear line. For brands seeking flexible sourcing, we are a trusted plus size activewear wholesale supplier. As a specialist plus size clothing manufacturer, we are committed to the quality and technical expertise needed to succeed in this important market.
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Your Advantage in the Conscious Activewear Market

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.