Smartwool Classic Thermal Merino Baselayer Crew Women'sMeet the new and improved Smartwool Classic Thermal Merino Base Layer Crew for Men. This 100% Merino wool fan favorite is updated with 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 the best base layers for cold weather to your winter wardrobe and experience the difference the