Ski sock with a number of foot (shin, ankle and instep) reinforcements for total comfort. Practical and versatile, it’s perfect for skiing. Specifications:-Cushioned reinforcement under the foot: maximum comfort, better heat circulation, toe and heel protectionComposition: Polyamide 45% (nylon), Acrylic 38%, Polypropylene 10%, Polyester 5%, Elastane 2% Batteries sold separately