Meet the new and improved Women's Classic Thermal Merino Base Layer Crew. This updated 100% Merino wool fan-favorite has new color options and an enhanced fit to improve functionality while elevating aesthetics. The addition of shoulder panels and its flatlock seam construction helps prevent chafing and increases your comfort level. Add one of Smartwool's best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.