4-way stretch, 7.25-oz. 96% polyester, 4% elastane
Base 4.0: ultra warmth for "brutally" cold weather
ColdGear technology: warm, dry, and light
ArmourBlock anti-odor technology helps reduce BO
Ergonomic flatlock seams and raglan sleeves
Under Armour's famous ColdGear base layers are designed to keep you warm, dry, and light. This fitted crew-neck shirt is made from quick-drying, 4-way stretch, 7.25-oz. 96% polyester, 4% elastane. The warmest UO base layers available, heavy-weight Base 4.0 garments offer ultra-warmth for "brutally" cold conditions. Ergonomically placed flatlock stitched seams and raglan constructed shoulders offer ultimate mobility and comfort next to your skin. ArmourBlock anti-odor technology helps reduce unpleasant body odor.