Baselayer

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...

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...

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,...

HeatGear Armour is UA's original performance baselayer - the one you put on first and take off last. So they made it extra comfortable by wicking sweat and stretching so you can move no matter what.

HeatGear Armour is UA's original performance baselayer - the one you put on first and take off last. So they made it extra comfortable by wicking sweat and stretching so you can move no matter what.

HeatGear Armour is our original performance baselayer - the one you put on first and take off last. So UA made it extra comfortable by wicking sweat and stretching so you can move. No athlete can go without it.

HeatGear Armour is our original performance baselayer - the one you put on first and take off last. So UA made it extra comfortable by wicking sweat and stretching so you can move. No athlete can go without it.

HeatGear Armour is UA's original performance baselayer - the one you put on first and take off last. So they made it extra comfortable by wicking sweat and stretching so you can move no matter what.

HeatGear Armour is UA's original performance baselayer - the one you put on first and take off last. So they made it extra comfortable by wicking sweat and stretching so you can move no matter what.

HeatGear Armour is our original performance baselayer - the one you put on first and take off last. So UA made it extra comfortable by wicking sweat and stretching so you can move. No athlete can go without it.

HeatGear Armour is UA's original performance baselayer - the one you put on first and take off last. So they made it extra comfortable by wicking sweat and stretching so you can move no matter what.