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New 2.1 base layers to be released end of April.

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

 

  • 3.1 Men's XOUNDERWEAR Seamless Liner Shorts 3/4 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
  • 3.1 Men's XOUNDERWEAR Seamless Liner Shorts 3/4 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
  • 3.1 Men's XOUNDERWEAR Seamless Liner Shorts 3/4 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
  • 3.1 Men's XOUNDERWEAR Seamless Liner Shorts 3/4 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
  • 3.1 Men's XOUNDERWEAR Seamless Liner Shorts 3/4 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
  • 3.1 Men's XOUNDERWEAR Seamless Liner Shorts 3/4 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
  • 3.1 Men's XOUNDERWEAR Seamless Liner Shorts 3/4 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
3.1 Men's XOUNDERWEAR Seamless Liner Shorts 3/4 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

$37.05
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Reg $39.00

SAVE $1.95 (5%)

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XO-HVAC System™

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product information

  • Features
  • What is a form fit base layer
  • Tech Specs
  • Why We Made This
  • Reviews (1)

Features

  • The ultimate base layer underwear for any hot or cold weather condition.
  • The breathable XOSKIN™ technology fabric is highest rated for anti-odor/skin wellness, and for taking moisture management, skin protection, abrasion and comfort a quantum leap forward during high energy levels.
  • The body-mapped sweat traps and air channels promote maximum airflow to help you stay comfortable.
  • Say no to chafing, friction and hot spots
  • Provides full range of motion.
  • Preshrunk so you don't kick your dryer on laundry day.

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, and quads 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 +-2.2 ounces it is the lightest performance 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.    

US Patents | PTFE-9,828,701 | Copper-9,469,923

XOSKIN™ Tech Specs

  • designed for:
    Running, mountain biking, yoga, cross training, skiing, gym, work--everything!
  • fabric:
    Seamless XOSKIN™ technology
  • properties:
    Moisture-management, skin protection, anti-odor, skin wellness, 3D body-mapped, chafe-resistant, preshrunk, breathable construction
  • fit:
    Athletic
  • length:
    Above knee
  • inseam:
    Flat +-8 inches, Stretches to +-11 inches
  •  

When your adventure is calling, we answer with gear that goes the distance. We engineered these shorts 3/4 from super light-weight XOSKIN™ technology fabric that is highest rated for skin comfort. The construction improves internal abrasion and skin wellness, enhances breathability, controls odor, manages moisture, dries rapidly and decreases weight. It also allows the garment to slide more easily over your skin for maximum comfort. We body-mapped these shorts 3/4 with sweat traps and air channels so air can flow at maximum speed to enhance thermal dynamics. Get ready for the long haul!

  • 2024-01-14 06:45 am

    Ran 16 mile trail on the 6th with REI Swift lined shorts. It produced the worst chaffing ever in 20 years of running, even with 1/2 a Glide stick. Researched and found these. Ordered on the 7th, received them on the 11th. I cut the liner out of the REI shorts and wore these as a base for a 18 mile trail on the 13th…they were flawless!!! The misery index went from a 9+ to a zero! Going forward, these will be the first thing to put on before anything else!

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