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. Features of the Smartwool Women's Intraknit Merino 200 Crew Engineered construction Uses knit structures to enhance Performance with lighter weights and cleaner finish Mesh ventilation seamlessly knit in gender-specific zones designed to keep the body dry and comfortable 3D mapping results in near custom Fit and freedom of movement while ribbed elbows provide added durability Merino sport yarn combines the power of merino with the durability and fast dry times of polyester Fabric Details 53% Merino Wool, 45% Polyester, 2% Elastane