TimberWool™ The natural fiber duo of merino and tree fibers is temperature-regulating and helps keep you dry, warm, and odor free. Natural Odor Protection Merino wool is naturally antimicrobial, helping prevent odor and keeping feet fresh and stink-free. Temperature Regulating Merino wool has a natural loft that releases body heat while wicking moisture, keeping your feet cozy and dry in any climate. Toe and Heel Cushioning Provides extra comfort, shock absorption, and durability. for those heavy out and backs. Dual Layer Cuff A comfy fit that keeps the sock from sliding down the leg. Contoured Fit Follows the natural shape of the foot and leg, making it easy to get on and off and providing a customized-like fit. Medium Support Increases circulation to provide extra support that keeps legs, feet, and muscles warm. Helps to prevent soreness and swelling. If you haven't worn compression before, 15-20 mmHg is a great starting point. 42% Nylon, 37% Lyocell, 16% Merino Wool 5% Elastane. Can be worn 3-4 times before washing. Recommended to hang dry to maintain elasticity and prevent shrinkage. Wash cold. No fabric softene