UA Base 4.0 Extreme Baselayer is our warmest yet, delivering extreme warmth in the extreme cold|UA Scent Control Technology to keep you undetected in all pursuits|Soft, brushed grid interior traps air, managing your body\'s microclimate to keep you warm & comfortable|Material wicks sweat & dries really fast|4-way stretch material moves better in every direction|Performance elastic waistband - Style #: 1343245|Working fly|Inseam: 30.5\"|81% Polyester/19% Elastarell|Imported - Machine wash cold with like colors|Use only non-chlorine bleach when needed|Tumble dry low|Do not iron|Do not use softeners|Do not dry clean