Introducing the Yaktrax Pro, an exclusive new traction device, perfect for the active winter enthusiast. Made of a 100% natural rubber blend, the Yaktrax Pro is designed to give you increased durability while working, running or enjoying winter outdoor activities. The Yaktrax Pro comes with a removable performance strap to help keep your Yaktrax in place during use. Created using stainless steel coils, the Yaktrax Pro grants 360 degrees of traction on ice and snow. When you walk, work or run in the Yaktrax Pro, every step you take places hundreds of biting edges in direct contact with the ice beneath your feet. Buy your Yaktrax Pro today, and get back to enjoying the winter wonderland! Feature: Removable Velcro performance strap provides added stability Fits on virtually any type of shoe or boot; easy on-and-off Ten times the gripping points as any spike based traction device Nothing new to learn; walk as you normally would Spike-less and ultra-light Super strength 1.4mm horizontal coils provide forward-backward traction Vertical coil pattern provides side-to-side stability Can be worn in temperatures as low as -41 degrees Fahrenheit Abrasion resistant steel coils will not damage most flooring Size Small Medium Large X-Large US Men 5 - 8.5 9 - 11 11.5 - 13.5 14 + US Women 6.5 - 10 10.5 - 12.5 13 - 15 15.5+ Euro Men 37.5 - 42 43 - 45 46 - 48 48.5+ Euro Women 38 - 42.5 43 - 45 46 - 48 48.+