The natural effect of Merino wool ensures good heat regulation and moisture absorption. The socks have elastic bands for comfort and stability. Thickened Polypropylene provides this sock maximum protection of pressure points and of the sole of the foot. The back of the socks are reinforced with extra protection and comfort. For an optimal fit, these socks are specially shaped for the left and right side. The socks feel soft on the skin and keep the feet dry, warm and comfortable. Barts Advanced Ski Sock - Blue Technical unisex ski socks with left & right fit 22% merino wool The natural effect of merino wool ensures good heat regulation and moisture absorption Feels soft against the skin and has a flat toe seam Elastic support at the top, ankle and arch for a perfect fit and stability Polypropylene thickened sole and pressure points for extra protection Composition2% Elastane / 31% Polyamide / 22% Acrylic / 23% Polypropylene / 22% Merino Wool