Ozark Trail Women's Midweight thermal baselayer Crew:100% polyesterMidweight thermal baselayerDouble-layer fabric with thermoregulating technologyProvides odor control, moisture management and sun protectionAll flat seam constructionSet-in long sleeves with ribbed cuffsCrew neckline with stretch logo neck tapeAvailable in blackMachine wash cold, wash dark colors separately, only non-chlorine bleach when needed, tumble dry low, do not iron, steam or dry clean, no fabric softener or dryer sheet