For the early cold or very high activity levels you need a baselayer with extra breathability without a loss of coverage. UAs strategically designed Cold Gear baselayer has panels mapped to key heat zones on your body. The lighter panels dump excess heat when youre running hot, keeping you comfortable & on your game. Features Dual-layer fabric gives you a soft, ultra-warm interior & a slick, fast-drying exterior Lightweight underarm panels deliver superior breathability 4-Way Stretch fabrication allows greater mobility & maintains shape Signature Moisture Transport System wicks sweat away from the body Anti-Odor technology prevents the growth of odor causing microbes Smooth, chafe-free flatlock seam construction