1,Light,safe,durable and easy on/off 2,Size of S/M/L/XL 3,Secure walk in slip surface 4,Unisex design for both man&woman silicone anti slip shoes cover Product Typemountain crampon, snow walking cramponsStrap materialMade of special high quality rubber good elasticity, abrasion resistance, solid and strong!Spike materialstainless steel Usagemountain climbing, hiking and other outdoor sports, ...