Base Layer

What's it do? UA Base 4.0 is a men's baselayer built for extreme cold weather and lower activity. It uses a unique pattern that's designed to trap heat without adding bulk. Think long underwear, revamped for today's top athletes.   UA Base™...

Stay warm and comfortable during your cold-weather workouts with the Under Armour Men's UA ColdGear® Leggings. Designed to provide superior insulation without adding bulk, these leggings feature a dual-layer fabric with an ultra-warm, brushed...

87% Polyester, 13% Elastane Imported Pull On closure Dual-layer fabric with an ultra-warm, brushed interior & a smooth, fast-drying exterior Stretch-mesh gusset & inseam panels provide strategic ventilation 4-way stretch construction moves...