ASK AN EXPERTDescription
- UA Base 4.0 Extreme Baselayer is our warmest yet, delivering extreme warmth in the extreme cold
- 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
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.
Warranty Information
| Size | CHEST (in) | WAIST (in) |
|---|---|---|
| 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 |
