UA Base 4.0 is a men's base layer 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.
Constructed of the same water resistant, breathable, stretch woven fabric as the Ascent Series, the Youth Sitka Cap is the only cap your kids will ever need!
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.
Whether you wear the Jetstream Vest as an insulation layer or a core outer piece, you’ll be rewarded with stellar wind-stopping capacity brought to you compliments of GORE-TEX INFINIUM™ with WINDSTOPPER® Technology.