Durable, soft Merino wool comforts your every trick. Itch-free & natural thermoregulation combine with Wick Dry?? moisture control for dry, warm feet. Memory-knit construction holds form, wash after wash. Smooth, flat toe seam adds comfort and durability. Made to resist friction that causes blisters and hot spots. Thermalined shin, sole and toe absorbs shock and insulates. 35% nylon, 32% Merino wool, 32% acrylic, 1% spandex. Medium weight.