Under Armour Men's Packaged Base 4.0 Crew T-Shirt

UA Base 4.0 is a men's baselayer built for extreme cold weather and lower activity. UA Base 4.0 Extreme Baselayer is our warmest yet, locking in your body's heat to deliver extreme warmth in the extreme cold. It uses a unique pattern designed to trap heat without adding bulk, with a soft, brushed grid interior that traps air against your skin to closely manage your body's microclimate. Material wicks sweat and dries really fast, and 4-way stretch construction moves better in every direction. UA Scent Control Technology helps keep you undetected in all pursuits. Constructed of a polyester/elastane blend for fit and thermal performance.

• UA Base 4.0 Extreme Baselayer is our warmest yet, locking in your body's heat to deliver extreme warmth in the extreme cold|UA Scent Control Technology to keep you undetected in all pursuits|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|4-way stretch construction moves better in every direction|78% Polyester/22% Elasterell