Versatile proprietary adjustable fit system allows for a custom fit on a wide range of footwear from trail running shoes to outdoor boots. Traction equipped with 16 ice biting steel studs placed under the toe, heel, and ball of your foot for traction where you need it most. Other bells and whistles includes an easy to use waterproof storage container. One size fits most (women's 6 - men's 14). Material: Steel.