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.
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.
This trail-ready pant gets updated with a new five-pocket design and slimmer fit than the original. It still boasts water-resistant, quick-dry performance and a rugged stretch fabric for easy mobility and lasting comfort.