Smartwool Women's Classic Thermal Merino Long Sleeve Base Layer Shirt - Meet the new and improved Women's Classic Thermal Merino Base Layer Crew. Add one of the best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking. Slim fit is intended to follow the contours of the body; Fabric helps combine the moisture management, temperature regulation, and odor resistance of 100% Merino wool with interlock knit for comfort; Back body seam wraps to front; Raglan sleeves; Flatlock seam construction designed to help increase comfort and minimize chafing; Style: SW016369;