Yaktrax Pro Ice Grips - Medium - Black Eco Friendly - 70% Recycled material is constructed into this Safety piece of equipment. Hand Moulded coils - Giving 360 Degree traction to the wearer. Lightweight - Weighing between the region of 45 and 95 grams. Sizes: XS = UK j12-4, S = UK4-6.5, M = UK6-9, L = UK9-12, XL = UK11-14