The Under Armour Men's Packaged 2.0 Base Layer Shirt was designed to deliver unmatched performance. The material wicks sweat and dries really fast, while the the brshed grid interior traps air, managing your body's microclimate to keep you warm & comfortable. Features4-way stretch material moves better in every directionMaterial wicks sweat & dries really fastRaglan sleevesShaped hemSoft, brushed grid interior traps air, managing your body's microclimate to keep you warm & comfortableUA Base 2.0 Active Baselayer is lightweight, flexible & breathable for high activity in cool conditions