The Smartwool Women's Intraknit Merino 200 Crew is a slim fit crew top for cold weather activity. Wear it next to skin and enjoy the non-itchy and moisture wicking merino wool, polyester and elastane blend. To accommodate movement in all activity, 3D mapping provides a custom fit without sacrificing durability. Mesh at specific zones allow for increased breathability as exertion warms up your body. 53% Merino Wool, 45% Polyester, 2% Elastane