UA Base 4.0 is 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.
Read more.
Product description
UA Base 4.0 is 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.
Reviews
Any questions about this product?
Or do you need any help ordering? Feel free to get in touch with our support department at or +17055228889. We're happy to help!
Related products
Any questions about this product?
Or do you need any help ordering? Feel free to get in touch with our support department at or +17055228889. We're happy to help!