Base Layers

Features of Men's Under Armour ColdGear Base Layer 4.0 Crew 78% Polyester / 22% Elasterel Fitted: Next-to-skin without the squeeze UA Base 4.0 Extreme Baselayer is our warmest yet, locking in your body's heat to deliver extreme warmth in the extreme...

Under Armour Men's Base™ 4.0 Leggings - Fits next to skin but without the squeeze. Mega-grid thermal fleece for the ultimate warmth in the brutal cold thermal grid fabric traps heat in tiny pockets for long-lasting protection. Quick-dry construction...