UA took the thermal and rebuilt it to work for athletes that take their game off-road. The unique negative grid traps monster warmth without adding excess weight and the smooth exterior allows easy layering. UA Base 3.0 is heavyweight protection in a lightweight layer. It provides superior warmth for times when you know you'll need it. On the hill or on the move, when you run cold get the Â¼ zip that keep you going strong. It features flatlock stitching, ergonomic seam placement and raglan construction. This 1/4 zip offers on demand venting and the material is Armourblock anti-odor technology.
Fitted: Sits close to the skin for a streamlined fit without the squeeze of compression.
UA Base 3.0: Aggressive warmth for extreme cold
Thermal grid fabric traps heat in tiny pockets for long-lasting protection
Quick-dry construction wicks moisture to keep you drier, lighter, and more comfortable
Lightweight, 4-Way Stretch construction improves mobility and maintains shape
Soft, brushed negative grid interior traps hot air, providing superior warmth
Anti-Odor technology prevents the growth of odor causing microbes