Warmth without bulk in our softest, smoothest men’s baselayer ¼ zip top yet. This second-skin men’s baselayer top, designed to be worn under your gear, is sweat-wicking, stretchy, and keeps muscles optimally warm. UA Base™ 4.0 is the warmest in our UA Base™ lineup, so wear this one when it’s the coldest.
Product Details
Specs and Care
Size and Fit
| CHEST | WAIST | |
|---|---|---|
| XS | 31 - 34 | 28 - 29 |
| SM | 34 - 37 | 29 - 31 |
| MD | 37 - 41 | 31 - 34 |
| LG | 41 - 44 | 34 - 37 |
| XL | 44 - 48 | 37 - 41 |
| XXL | 48 - 52 | 41 - 45½ |
| 3XL | 52 - 56 | 45½ - 50 |
| 4XL | 56 - 60 | 50 - 54½ |
| 5XL | 60 - 64 | 54½ - 59 |
Made for the Wild. Keep your drinks hot or cold all day long with rugged, reliable gear from Stanley, available now.
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