Baselayer Bottoms

UA Base 3.0 is built for very cold weather and moderate 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 3.0 men's cold weather leggings are built for extreme cold weather and lower activity. Their unique pattern traps heat without adding bulk. Think long underwear, revamped for today's top athletes.

Lightweight Flame-Retardant First Layer. Designed to fit regularly for comfort and a full range of motion. Neither snug nor loose. Allows for unrestricted movement. Ideal for temps between 40° - 100° F.

Lightweight Flame-Retardant First Layer. Designed to fit regularly for comfort and a full range of motion. Neither snug nor loose. Allows for unrestricted movement. Ideal for temps between 40° - 100° F.

UA Base 3.0 men's cold weather leggings are built for extreme cold weather and lower activity. Their unique pattern traps heat without adding bulk. Think long underwear, revamped for today's top athletes.

UA Base 3.0 men's cold weather leggings are built for extreme cold weather and lower activity. Their unique pattern traps heat without adding bulk. Think long underwear, revamped for today's top athletes.

Lightweight Flame-Retardant First Layer. Designed to fit regularly for comfort and a full range of motion. Neither snug nor loose. Allows for unrestricted movement. Ideal for temps between 40° - 100° F.

Create a virtually impenetrable barrier between you and the coldest weather or the most wicked winds. The Range Ready Tight is constructed with an intelligent fabric blend of no-itch, super-soft, odor-resistant Merino wool, ultra-tough nylon and flexible...

Lightweight Flame-Retardant First Layer. Designed to fit regularly for comfort and a full range of motion. Neither snug nor loose. Allows for unrestricted movement. Ideal for temps between 40° - 100° F.

UA Base 3.0 men's cold weather leggings are built for extreme cold weather and lower activity. Their unique pattern traps heat without adding bulk. Think long underwear, revamped for today's top athletes.

UA Base 3.0 is built for very cold weather and moderate activity. It uses a unique pattern that's designed to trap heat without adding bulk. Think long underwear, revamped for today's top athletes.

Lightweight Flame-Retardant First Layer. Designed to fit regularly for comfort and a full range of motion. Neither snug nor loose. Allows for unrestricted movement. Ideal for temps between 40° - 100° F.

UA Base 3.0 is built for very cold weather and moderate 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 3.0 men's cold weather leggings are built for extreme cold weather and lower activity. Their unique pattern traps heat without adding bulk. Think long underwear, revamped for today's top athletes.

UA Base 3.0 is built for very cold weather and moderate 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 3.0 men's cold weather leggings are built for extreme cold weather and lower activity. Their unique pattern traps heat without adding bulk. Think long underwear, revamped for today's top athletes.