Warmth without the bulk, in our best, softest version yet. Our smooth, sweat-wicking, stretchy, all-purpose baselayer is down for whatever. Hiking, skiing, sports—you’ve got it. This sleek crew is ready to deliver a toasty feel and comfortable fit no matter the weather.

• UA Base™ 4.0 Extreme Baselayer is our warmest yet, delivering extreme warmth in the extreme cold

• Material wicks sweat & dries really fast

• 4-way stretch material moves better in every direction

• Updated fabric with improved stretch is softer & smoother for maximum comfort and easier layering

Warmth without the bulk, in our best, softest version yet. Our smooth, sweat-wicking, stretchy, all-purpose baselayer is down for whatever. Hiking, skiing, sports—you’ve got it. This sleek crew is ready to deliver a toasty feel and comfortable fit no matter the weather.

• UA Base™ 4.0 Extreme Baselayer is our warmest yet, delivering extreme warmth in the extreme cold

• Material wicks sweat & dries really fast

• 4-way stretch material moves better in every direction

• Updated fabric with improved stretch is softer & smoother for maximum comfort and easier layering