YAKTRAX RUN Ice & Snow Grips For Running Shoes, 3mm Carbide-Steel Spikes & 1.4mm Stainless-Steel Coils, Provides Traction In Ice & Snow, GreyCoils Yaktrax Pro are made from natural rubber with 1. 4mm high strength abrasion resistant coils made from 70% recycled metal.. Traction When you walk in the Yaktrax Pro, every step you take places hundreds of biting edges in direct contact with the ice beneath your feet giving you 360 degree traction. Stability throughout The high strength horizontal coils provide forward and backward stability. Increased Durability The Yaktrax Pro is ideal for the