Luxurious natural Merino wool & silk are knit to fit each foot anatomically for superior feel on the slopes. Moisture management to keep you warm/dry. Memory-knit construction throughout helps sock keep its form, wash after wash. Smooth, flat toe seam adds comfort and durability. Anatomically designed for a better fit for each foot (Left/Right). Half-cushioned shin and foot absorbs shock and insulates. For both men & women. 41% Merino wool, 40% nylon, 17% silk, 2% spandex. Lightweight.