Size Guide
Men's Baselayer Sizes
ACCAPI USA's men's infrared compression apparel is engineered for performance and recovery. Our sizing is designed for a snug, functional fit that works with your body's natural movement. Use the measurements below to find your size — when between sizes, we recommend sizing up for a more comfortable fit. Shop our men's collection

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Size Notes: If you find yourself between sizes, we suggest you choose the larger size
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Men's Polar Bear Baselayer Pants | Extra Warm Hollow Fiber
Men's Polar Bear Baselayer Pants | Extra Warm Hollow Fiber
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Full-Length Warmth Built for the Mountain
The Men's Polar Bear Baselayer Pants are engineered to perform in extreme cold — keeping your legs warm, dry, and unrestricted whether you're skiing, snowboarding, snowshoeing, or tackling a nordic trail. Hollow fiber insulation delivers serious heat retention without the added bulk of traditional thermal layers.
Hollow Fiber Insulation Inspired by the structure of polar bear fur, the hollow-fiber polyester core traps air to maximise heat insulation while maintaining lightweight breathability and effective moisture control throughout your activity.
EQT Equilibrium Technology Accapi's proprietary EQT technology enhances your body's natural stability and balance, improving proprioception, agility, and circulation. Designed for active winter sports where body awareness and postural response make a real difference.
EXS Ultra Extensible Technology Seamless flatlock construction and EXS ultra-extensible technology combine to deliver exceptional four-way stretch. These pants layer cleanly under ski or snowboard pants with zero bunching and complete freedom of movement.
Key Features:
- Extra warm hollow fiber insulation
- EQT Equilibrium Technology for balance & proprioception
- EXS ultra-extensible seamless flatlock construction
- Excellent breathability & moisture control
- Lightweight with minimal bulk
- Made in Italy
Thermal Rating: Extra Warm | 49% Polyamide, 47% Polyester, 4% Elastane | Made in Italy
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