Baselayer

The Phase 1 Boxer Briefs from XGO are made from a blend of Modacrylic and FR Rayon that meets the ASTM D6413 Standard. These boxer briefs will not melt or drip if exposed to flame. These briefs also feature XGO's Superior Acclimate that will wick...

We all hate it. That stiff, distracted feeling you get when you're out in the cold. That's why UA built a baselayer that keeps you warm and dry without being bulky or riding up, so you can stay focused all season long.

We all hate it. That stiff, distracted feeling you get when you're out in the cold. That's why UA built a baselayer that keeps you warm and dry without being bulky or riding up, so you can stay focused all season long.

We all hate it. That stiff, distracted feeling you get when you're out in the cold. That's why UA built a baselayer that keeps you warm and dry without being bulky or riding up, so you can stay focused all season long.

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 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.

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.

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.

The Phase 1 Boxer Briefs from XGO are made from a blend of Modacrylic and FR Rayon that meets the ASTM D6413 Standard. These boxer briefs will not melt or drip if exposed to flame. These briefs also feature XGO's Superior Acclimate that will wick...

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.

For superior comfort, the Regulation Base Layer offers strong yet soft cotton that is vat-dyed for consistent color and a true, remarkable fit. These 100% combed cotton jersey knits offer a generous fit with extra-long tails. Additional features include...

We all hate it. That stiff, distracted feeling you get when you're out in the cold. That's why UA built a baselayer that keeps you warm and dry without being bulky or riding up, so you can stay focused all season long.