Baselayer Tops

ColdGear Infrared technology holds in body heat, without adding weight or bulk. It's a special, soft print on the inside and it keeps you warmer, longer, so you can work out in the bitter cold.

UA Base 4.0 is 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.

The ZANheadgear SportFlex Series Arm Sleeve is heavier than the standard arm sleeve, with a softness & comfort that surpasses any competitor. Perfect to wear as protection from the sun or to keep warm in the cold. Lightweight and machine washable,...

UA Base 2.0 is built for cold weather and high activity levels. It uses a unique pattern that's designed to trap heat without adding bulk. Think long underwear, revamped for today's top athletes.