Snow Force socks Brubeck are ideal for snowboarding. They are made of merino wool with excellent thermal properties. The construction is based on polypropylene fibres with silver ions. They are characterized by high durability and high strength. The sock is constructed as follows: inner layer, thickened FROTTE WOOL part gives the foot the feeling of warmth, FORTE zone has double reinforcement giving extra protection against Achilles tendon injury and preventing abrasions and blisters, MIDDLE ZONE reinforced area in the middle part of the metatarsal prevents the sock from shifting, STICK SYSTEM zone keeps the sock in the right position. The ribbed welt conforms to the leg and provides excellent sock hold without restricting blood circulation.