Under Armour ColdGear Base 4.0 1/4 Zip, 1343242001LG-Parent
![](https://www.sci2way.com/wp-content/uploads/2022/05/1343242001XL-400x457.png)
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.
![](https://cdn.shopify.com/s/files/1/0571/4153/products/s60986_1600x.jpg?v=1672777295)
Under Armour ColdGear Base 4.0 Crew
![](https://m.media-amazon.com/images/I/71nnKXTm0RL._UX250_.jpg)
Under Armour Men's ColdGear® Base 4.0 Leggings SM Black : Clothing, Shoes & Jewelry
![](https://cdn.shopify.com/s/files/1/0571/4153/products/l60986_1600x.jpg?v=1672777297)
Under Armour ColdGear Base 4.0 Crew
Men's Armour Fleece® ¼ Zip
![](https://m.media-amazon.com/images/I/71eT7+GAgaL._UX250_.jpg)
Under Armour Men's ColdGear® Base 4.0 Leggings SM Black : Clothing, Shoes & Jewelry
![](https://m.media-amazon.com/images/I/81XBqLGWyfL._UX250_.jpg)
Under Armour Men's ColdGear® Base 4.0 ¼ Zip SM Black : Clothing, Shoes & Jewelry
![](https://m.media-amazon.com/images/I/61mYaGS2q+L._UX250_.jpg)
Under Armour Men's ColdGear® Base 4.0 Leggings SM Black : Clothing, Shoes & Jewelry
![](https://m.media-amazon.com/images/I/71Fj16ZYHoL._UX250_.jpg)
Under Armour Men's ColdGear® Base 4.0 Leggings SM Black : Clothing, Shoes & Jewelry
![](https://www.sci2way.com/wp-content/uploads/2022/05/1343242001XL.png)
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
![](https://m.media-amazon.com/images/I/614pdEQGhRL._UX250_.jpg)
Under Armour Men's ColdGear® Base 4.0 ¼ Zip SM Black : Clothing, Shoes & Jewelry
![](https://cdn.shopify.com/s/files/1/0571/4153/products/l50167_8d31bd19-9a9d-4432-bd30-47d594fe16a8_1600x.jpg?v=1656479511)
Under Armour ColdGear Base 4.0 Crew
![](https://m.media-amazon.com/images/I/51GfMkySyzL._AC_UY1000_.jpg)
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