Ski sock with a number of foot (shin, ankle and instep) reinforcements for total comfort. Practical and versatile, it’s perfect for skiing.Battery is not included.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%