Under Armour Base Layer 4.0

Maintain extreme warmth in the extreme cold with Under Armour Base 4.0 base layers. Shop for affordable prices and stay in the field longer.

Men's UA Base 4.0 Crew

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

Men's UA Base 4.0 ¼ Zip

Under Armour Fitted Cold Gear Black 4.0 Base Layer Leggings

Men's Under Armour Base 4.0 Long Sleeve Base Layer

Under Armour Men's ColdGear® Base 4.0 ¼ Zip SM Black

Under Armour UA Base 4.0 SM Black at Women's Clothing store

Under armour Women Winter Sports Base Layers & Thermals for sale

Women's Under Armour Base Layer 4.0

The Under Armour® Base 4.0 Extreme Base Layer Leggings for women keep you warm in serious cold. Made of a polyester/elasterell blend, these leggings

Under Armour Base 4.0 Extreme Base Layer Leggings for Ladies