ZTCOO 2x Anti-slip Ice Cleats Shoe Boot Tread Grips Traction Crampon Chain Spike Sharp Snow Walking Walker Material: Eco-Friendly TPE (Thermoplastic Elastomer) and High Quality Steel special non-slip studs. Perfect For Winter Sports + Walking & Hiking On Grass & Snow. Reduces slip and fall potential. Easily fit the shoes of US size 8-12 ( Europe Size: 41-46 ). Package: 1 Pair of Rubber Tread, NOT include the shoes. Easy on/off to fit boots, sneakers, casual and dress shoes-- Wrap the front around your toe section, then stretch the back around your heel