Audew A Pair of Over Shoe Boot Tread Studded Anti-slip Ice Snow Shoe Spikes Grips TPE Material: TPE (Thermoplastic Elastomer) and special non-slip studs. Cold resistant (the material): -40 degree C. The special non-slip studs offer excellent traction on ice and snow. Great for ice fishing, hunting, walking, jogging, hiking, running, snow shoveling, etc. Suit for men and women, four size for your selction, you can choose it according the product describtion.