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Under Armour

Men's Packaged Base 4.0 1/4 Zip

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Color: Black
Size

Please Note:

Effective December 16th, 2025, we will no longer accept online orders for delivery or pick-up at stores, with the exception of JAX gift cards. Orders placed on or before that date will still be honored. Please see our announcement page for full details: https://jaxgoods.com/pages/website-announcement

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. UA Scent Control Technology to keep you undetected in all pursuits. Soft, brushed grid interior traps air, managing your body's microclimate to keep you warm & comfortable. Material wicks sweat & dries really fast. 4-way stretch material moves better in every direction. 1/4 zip front allows you to dump excess heat quickly & efficiently.

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