ALPS IceGrips Snow Traction Gear Slip on Snow Ice Cleat Traction Plus 10 Extra Replacement Steel Studs (Available in S, M, L, XL Sizes) Prevent slipping on snow and ice conditions. Designed to help you hike on packed snow or ice. Strong natural rubber material with durable spiked traction Easy to get on and off with light weight constructions and folds up to fit in your pocket. Size Chart - Small - Women(5-7)/Men(3-5)/EU 31-36 Medium - Women(7-10)/Men(5-7)/EU 36-41 Large - Women(10-13)/Men(7-10)/EU 40-44 XLarge - Women(13-16)/Men(10-13)/EU 45-47