Under Armour ColdGear Base 4.0 1/4 Zip, 1343242001LG-Parent

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.

Under Armour ColdGear Base 4.0 Crew

Under Armour Men's ColdGear® Base 4.0 Leggings SM Black : Clothing, Shoes & Jewelry

Under Armour ColdGear Base 4.0 Crew

Men's Armour Fleece® ¼ Zip

Under Armour Men's ColdGear® Base 4.0 Leggings SM Black : Clothing, Shoes & Jewelry

Under Armour Men's ColdGear® Base 4.0 ¼ Zip SM Black : Clothing, Shoes & Jewelry

Under Armour Men's ColdGear® Base 4.0 Leggings SM Black : Clothing, Shoes & Jewelry

Under Armour Men's ColdGear® Base 4.0 Leggings SM Black : Clothing, Shoes & Jewelry

Under Armour ColdGear Base 4.0 1/4 Zip, 1343242001LG-Parent

UA Base is a system of baselayers, numbered from 2.0 – 4.0, that takes you from cold to absolutely freezing temps. It uses a special negative grid

Under Armour Women's Base 4.0 1/Z Zip- Black

Men's UA Command ¼ Zip

Under Armour Men's ColdGear® Base 4.0 ¼ Zip SM Black : Clothing, Shoes & Jewelry

Under Armour ColdGear Base 4.0 Crew

Under Armour Mens ColdGear Base 4.0 Leggings : : Clothing, Shoes & Accessories

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

Women's UA Base 4.0 Crew