Men's athletic shorts

Premium Seamless Men's Athletic Shorts Manufacturer & OEM/ODM Partner

Welcome to the global B2B platform for the top quality Seamless Men’s Athletic Shorts with high performance, structurally engineered and heavy duty. Yiwu Xuanfei Knitting Co. Ltd., the leading B2B manufacturing partner to the global activewear industry, utilizes the latest Italian circular knitting technology in producing the cutting edge designs for top global brands, including SHEIN, Halara, Musera and Glowmode. With a 5,000㎡ modern facility, we are a one stop manufacturing partner for top global brands, premium labels and fast-fashion retailers. We supply top quality durable, functional and profitable men’s activewear products for global retail.

Our one-piece molded seamless technology allows us to create clothing for male athletes that are made in a seamless construction, thereby eliminating thick side seams and inner-thigh friction, giving athletes the ultimate in fitness training such as squatting, running, stretching and training, all without restriction.

The Seamless Advantage for Men's Performance Shorts

Men’s workout shorts traditionally are cut-and-sew products with heavy flatlock seams and numerous sections that in wear repeatedly rub and can chafe inner thighs. In many cases they also can split when subjected to great stress during such activities as weightlifting or high-intensity aerobic exercises. Our latest advanced circular knitting technology forms the fabric of your workout shorts into a single tubular structure (utilized in the highest-quality Santoni SM8 Top2 knitting machines). This unique structure enables considerable benefits to the manufacturer:

Anti-Chafing Kinetic Comfort:

Removing the outer side seam and reducing excessive edge stitching, our anti-chafing men’s shorts are designed to eliminate friction on the inner thigh. This comfort feature will ensure that chafing does not occur during long runs and intense training sessions.

Engineered Zoned Functionality:

Our high-precision digital programming enables creation of varying fabric densities within single garments. The multi-layered high-elasticity waistband can provide anti-slip core support while hyper-breathable, open-mesh ventilation zones can be incorporated into the lower thigh and crotch areas to provide the fastest possible heat dissipation. These functions are created without the need for cut and sew lines.

10% to 15% Cost Savings on Custom Details:

As part of Seamless manufacturing, custom jacquard motifs, integrated laser-cut ventilation and deep-dye digital prints are written into the fabric code minimizing cutting waste and resulting in lower secondary processing costs compared to traditional seamed manufacturing.

Technical Specifications & Intelligent Fabrics

We use heavy-duty raw materials and perform physical tests on the garments to ensure that the items in your inventory will withstand intense physical activity as well as repeated washing.

Halter-neck twist bodysuit

Bodysuit dress

Color-block bodysuit

Y-neck bodysuit

Twist-front bodysuit

Contrast-trim bodysuit

Specialized Fiber Matrix & Yarn Selection

Automated multi-yarn system blending technical face yarns with highly elastic base yarns:

The Material Matrix: We offer a selection of high-grade Nylon (polyamide) and performance-based Polyester fibers, blended with premium Spandex (elastane) core-spun yarns. These fibers can be further integrated with functional fibers, including Coolmax® for advanced moisture management, and eco-friendly anti-bacterial/anti-odor treatments for long lasting freshness.

Heavy-Duty Denier Profiles – High-end fabric profiles are offered in special versions like 3050+100D, 4030+100D, and 4030+140D. The corresponding yarns are machine-packed to achieve the highest possible density. The resulting fabrics are extremely robust, heavy, not transparent and retain their shape very well even after repeated stretching and deep squats.

Rigorous Quality Metrics: We measure the elastic recovery rate of our stretch fabrics to over 85% and perform rigorous tensile (ASTM D5034) and burst strength (ISO 13938-1) tests. We strictly control the washing shrinkage to $\le 3%$. We perform special fatigue tests on high-stress areas such as the crotch gusset of pants.

Precision Size Calibration

For consistent compression and athletic fit across global demographics, our designs are aligned with your exact circular machine cylinder sizes:

Standard Athletic Fits (S–M) are produced on 15” to 16” wide knitting machines for precision kniting.

Extended & Plus-Size Men’s Fits (L–XXXL): Made on 17” to 20” heavy-duty machinery. Fabric programmed to guarantee best structural integrity, stretch-recovery and full coverage on bigger, broader bodies.

Elite Designs & Custom Secondary Processing

Staying on top of ever-changing athletic trends is what our extremely flexible design options are all about. Thanks to our enormous stock of pre-dyed “white-blank” fabrics we are able to do a customized recolor as well as a whole range of other special visual options in no time at all.

Infinite Pantone Color Matching:

Our capability to dye garments to any Pantone color reference is limitless. Our seamless “white-blanks” are dyed to create highly stable colors with uniformity, which are constant with zero batch-to-batch variation.

Artisanal Visual Finishes.

This collection of custom finishes can add premium value to your collection. Tie-dye, gradient ombré, aurora striping and high-end matte acid washes create finishes that are suitable for heavy gym sessions as well as for casual streetwear.

Diverse Silhouettes (OEM/ODM):

The designs for 2-in-1 compression liner shorts, 5”/7” running shorts, relaxed-fit lounge shorts, seamless gym trunks and zippered-pocket utility shorts are developed by our design team to add 300+ new designs to your catalog on an annual basis.

Market Applications

Our OEM/ODM men’s athletic shorts are designed for various athletic disciplines.

Yoga, Mobility & Flow:

These super soft shorts are very flexible. They allow for full movement, during deep stretches and inverts without binding at the hip.

High-Intensity & Strength Training (Gym, HIIT, Cross-Train)

High-durability shorts made of moisture-wicking materials that are resistant to barbell abrasion and support core stability.

Endurance & Outdoor Sports (Running, Trail, Cycling):

Lightweight, hyper-breathable shorts featuring strategic mesh panels to keep athletes cool and dry during long hours of endurance activity.

Unmatched Supply Chain Reliability

Partnering with Xuanfei gives you an efficient and transparent supply chain. Automated knitting by Xuanfei eliminates over 60% of the manual sewing involved in production of knitted garments, enabling very fast production and subsequent restocking of low inventory items:

Two-Round Quality Control (QC): Two individual rounds of manual inspection for every single piece of sports shorts, prior to shipping, ensuring the best possible quality of face of the fabric and stitching.
Step-by-Step Transparency: We take pictures and organize the relevant digital files for every step of the process to ensure the best possible service. During the container loading process, for example, we even record the whole process on video.
Flexible B2B Cooperation: We are focused on quick prototyping. We support both OEM/ODM custom brand development and small-wholesale stock articles. That allows to minimize the initial inventory and design risks.

Scale Your Men's Activewear Line Today

We support global sportswear brands in optimizing production efficiency as well as emerging activewear labels in launching innovative collections of seamless men’s athletic shorts. Our team of experts is here to support you.

Get in touch with our Multilingual and Super-responsive team via Email or WhatsApp to obtain any Sample and obtain Technical Advice, and even Organize an On-Site Audit at Our Factory.