UA Base 2.0 is built for cold weather and high activity levels. It uses a unique pattern that's designed to trap heat without adding bulk. Think long underwear, revamped for today's top athletes.

• UA Base™ 2.0 Active Baselayer is lightweight, flexible & breathable for high activity performance in cool conditions
• Soft, brushed grid interior traps air against your skin, closely managing your body's microclimate to keep you warm & comfortable
• Material wicks sweat & dries really fast
• UA Base™ 2.0 Active Baselayer is lightweight, flexible & breathable for high activity in cool conditions
• 4-way stretch material moves better in every direction
• Soft, brushed grid interior traps air, managing your body's microclimate to keep you warm & comfortable