With its extra lightweight padding, this ski sock "SK4" is perfect for all custom-fit ski boots. It optimally supports the athletic skier by providing direct power transfer and high control. Rapid heat and moisture transport, along with the perfect fit, ensure good comfort for a sporty day on the slopes. The light compression offers a snug, wrinkle-free fit. Blood circulation is stimulated, warming the foot and accelerating recovery. Ideal for the athletic skier with very light padding for direct boot contact. Merino wool blend provides good thermal insulation. Perfect for all custom-fit ski boots due to its lightweight padding. Quick moisture transport is achieved through a three-layer construction. Direct power transfer and high control. Light compression for a wrinkle-free fit and improved circulation. Warms and accelerates recovery. Machine wash on wool cycle at 30°C. Do not tumble dry. Do not iron. Do not dry clean.