Baselayer Tops

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.

Worn under a vest carrier, the UV2 provides a clean and professional appearance. Expanding on our successful UV1 series, the UV2 FlexTech offers warmth without bulk when worn under vest carriers. The UV2 FlexTech provides exceptional comfort, mobility,...

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.