The Under Armour Men's Packaged 3.0 Base Layer Shirt features a soft, brushed grid interior that traps air, managing your body's microclimate to ensure both warmth and comfortability. FeaturesUA Base 3.0 All Season Baselayer provides midweight warmth at many activity levels & cold temperaturesMen's Long-Sleeves4-way stretch material moves better in every directionMaterial wicks sweat & dries really fastRaglan sleevesSoft, brushed grid interior traps air, managing your body's microclimate to keep you warm & comfortableBuilt-in thumbholes help keep sleeves in place & trap warmthUA Scent Control Technology to keep you undetected in all pursuits