Experience Unmatched Comfort & Performance with XOSKIN Gear. Made in the USA

All XOSKIN Coupon Codes Accepted: Elevate Your Performance Today

New Category of 2.1 Ultra Light Weight Base Layer Shirts Are In Stock.

Any questions give us a call or email. Thank You!



13 Items

Shop by

3.1 Women's XOUNDERWEAR Seamless Liner Tights Long with 2-Way Stretch XO Waist Band has a proprietary highly breathable “mesh” throughout the garment to rapidly wick moisture away from your skin. Made in the USA

Our new innovative 3.1 seamless XO-Underwear has proprietary and highly breathable “mesh” designs throughout the garment which allows perspiration to quickly pass through in vapor form. Nothing wet against the skin! This garment offers 3D body mapping with lightweight, compression zones for greater range of movement in the thighs, buttocks, hips, quads and calf areas for targeted skeletal support.  We even went the extra mile to include a unique XO-Waist Band with “two-way” stretch providing more flexible waist support and belly comfort. Weighing in at +-3.5 ounces it is the lightest performance long underwear on the market.  Great for ultra running, football, baseball, basketball, soccer, back packing, work, military, police, and almost anything life can throw your way for work, hobby, play or professionally-XO-Underwear can handle.     


Reg $65.00

SAVE $3.25 (5%)


Reg $65.00

SAVE $3.25 (5%)


13 Items

  • page
  • 2
  • of 2


XOSKIN™ Corporate
  Email Us

XOSKIN™ Customer Service
  Email Us


At XOSKIN™ we are revolutionizing performance apparel with ground breaking technology for your comfort.  We give special attention to the weight and compressibility of the material.  Our designs follow the body’s contours providing ergonomic shaping with reduced friction and enhanced movement.  The trailblazing science behind our USPTO Patented RAPIDriCOPPER™ seamless innovations are reinventing how fiber, fabric and engineered 3D knitted construction function together to provide the best ultra, road and trail running base-layers, compression run shorts, capris, race and recovery compression socks and sleeves, all of which have been tested at some of the hardest races on the planet.

email signup

XOSKIN™ RAPIDriCOPPER™ 3D seamless athletic sports apparel, ergonomic shaping, USPTO copper & PTFE patented fibers/yarns, USPTO design patents, short sleeve seamless, long sleeve seamless, sleeveless seamless, CAP short sleeve seamless, run seamless capri, ski seamless capri, run seamless short, unique 3D knitted structures, reduces friction and hot spots, rapid wicking and drying, inhibits bacteria and fungi, promotes skin wellness, promotes skin tone, healthier skin fabric, enhanced athletic movement.  


RMA Submission Form

Return Policy

Welcome to xoskin.us online store!

xoskin and its associates provide their services to you subject to the following conditions. If you visit or shop within this website, you accept these conditions. Please read them carefully.


We gladly accept the return of unworn, unwashed, unembroidered and undamaged items within 30 days of purchase.

  • xoskin for 100% customer satisfaction.
  • All returns will be at the customer's expense.
  • For wrong item(s) shipped or damaged in transit, please call us at 301-693-9483 or email us at info@xoskin.us
  • Order number and reason for return must be included with garments in the return package.
  • Garments damaged due to manufacturers defect may be exchanged.
  • Any worn garment being returned for construction or fabric failure must be cleaned prior to completing the return process.
  • Altered or embellished garments are not returnable. No returns will be accepted on discontinued or final sale products.