The Under Armour Men's Packaged 4.0 Base Layer Pants deliver comfort and heat retention. The soft, brushed grid interior traps air, managing your body's microclimate to keep you warm & comfortable. FeaturesUA Base 4.0 Extreme Baselayer is UA's warmest yet, delivering extreme warmth in the extreme cold4-way stretch material moves better in every directionMaterial wicks sweat & dries really fastSoft, brushed grid interior traps air, managing your body's microclimate to keep you warm & comfortableMen's LeggingsUA Scent Control Technology to keep you undetected in all pursuitsUA Base 4.0 Men's LeggingsPerformance elastic waistband