The Women's Thermal Ski Sock LastingH SDD 098 is a knee-high sock made of merino wool. It is warm, highly breathable, and specially designed to protect the feet during skiing or snowboarding. - Dense, double-layer material in the calf area - Triple layer in the foot and ankle area - Design that absorbs pressure and protects the foot during sports - Soft and wide elastic that does not cause discomfort Material: 70% merino wool, 10% nylon, 15% Siltex, 5% elastane Made in the Czech Republic