Kids and Boys Ski Socks, 2 Pairs (Quality/Material) Acrylic, Polyester/Polyurethane; Size: 6.7 - 7.9 inches (17 - 20 cm); Multi-type socks that can be used for a variety of occasions including skiing, snowboarding, trekking, and more. ■Warm far-red treatment keeps your toes warm. ■ Equipped with supporter function around the arch and ankle.Comfortable to use and prevent slipping.■ Cushion pile fabric is used for areas where stress is prone to be applied, such as the heel and toes.Absorbs shock■ Economical pair set!