Custom Performance T-Shirts & Tech Tees Manufacturer

As a specialist performance t-shirt manufacturer, we engineer technical tees for running, fishing, and training. Partner with us for your private label line of moisture wicking and cooling shirts.

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Sports T-Shirts

Engineered for a Performance Advantage

Performance-Ready Fabrics

Advanced Moisture Wicking

Our performance shirts feature hydrophobic fabrics that pull sweat away from the skin to the surface, keeping you dry and focused.

Breathable & Soft Fabrics

Breathability & Cooling

We utilize lightweight, micro-perforated, and mesh fabrics to create cooling shirts that maximize airflow and prevent overheating.

Durable Flatlock Construction3

Athletic, Chafe-Free Fit

Designed with an athletic cut and flatlock seams to allow a full range of motion without chafing or restriction.

Durable & Easy Care

Durable & Easy Care

Our technical tees are built to last, resisting pilling and shrinking while being easy to wash and quick to dry.

In-Depth Customization: Create Your Perfect Custom Performance Shirts

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 Sports T-Shirts 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 Performance T-Shirt Manufacturer for Custom & Wholesale Orders

Sansansun is a leading performance t-shirt manufacturer specializing in technical athletic apparel. We produce a full range of performance shirts for men and women, including long sleeve performance shirts and specialized custom running shirts. Our expertise in moisture wicking fabrics and cooling shirt technology ensures every tee we create provides a tangible advantage to the wearer.

We offer complete solutions for brands seeking high-quality technical tees. Our services include creating custom performance shirts for your private label line and offering flexible wholesale performance t-shirts programs. As a trusted supplier, we are the ideal partner for sourcing everything from custom 5k race shirts to a full collection of performance apparel.
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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.