Custom 2-in-1 Gym & Running Shorts Manufacturer

We are a specialist gym shorts manufacturer, with expertise in creating high-performance 2 in 1 running shorts. Partner with us to develop your private label line of functional, double-layer athletic shorts.

The Perfect Combination of Support & Freedom

Integrated Compression Liner

Integrated Compression Liner

Our 2 in 1 gym shorts feature a built-in compression liner for muscle support, reduced chafing, and secure coverage.

Functional Phone Pocket

Functional Phone Pocket

Designed with a secure, bounce-free phone pocket on the inner liner, a must-have feature for modern athletes.

Second-Skin Comfort

Lightweight & Quick-Dry

The outer layer is crafted from feather-light, quick-drying woven fabric for unrestricted movement and comfort.

All-Day Comfort & Mobility

Versatile for Gym & Running

The ultimate hybrid short, engineered for everything from heavy lifting in the gym to long-distance runs on the road.

In-Depth Customization: Create Your Perfect Custom Gym Shorts

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 Gym Shorts 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 Manufacturer for Custom 2-in-1 Running & Gym Shorts

As a leading gym shorts manufacturer, Sansansun specializes in producing technical athletic apparel. Our core expertise lies in the design and construction of high-demand 2 in 1 running shorts and double layer gym shorts. We engineer these shorts with functional features like integrated compression liners, secure phone pockets, and lightweight outer shells, making them the perfect 2 in 1 workout shorts for both men and women.

We offer a complete partnership for brands looking to source high-quality shorts. Our services include creating fully custom gym shorts and custom athletic shorts through our private label program. For brands needing flexibility, we also provide wholesale athletic shorts and wholesale gym shorts solutions. As your trusted supplier, we are committed to delivering superior quality on every order, big or small.
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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.