The Smartwool Women's Merino 250 Baselayer Crew is a midweight baselayer top made for cold weather comfort. It's great for keeping you warm but not too warm while hiking or skiing. Made with 100% Merino wool, it's soft on the skin, naturally odor-resistant, and keeps moisture off the skin. Back body seam wraps to front for body enhancing fit with Shoulder panels eliminate top shoulder seams. It has Flatlock seam construction designed to eliminate chafing and has an interlock knit.