The Yaktrax(R) Walk ice traction device deliversimproved traction, confidence and safety on packed ice or snow. Move about naturally with the same solid grip that you are accustomed to on dry surfaces. Yaktrax(R) utilizes a unique, spikeless, patented coil design to provide stability and durability. SIZE CHART: Extra Small (XS): Women's 2.5-6 / Men's 1-4.5 Small (S): Women's 6.5-10 / Men's 5-8.5 Medium (M): Women's 10.5-12.5 / Men's 9-11 Large (L): Women's 13-15 / Men's 11.5-13.5 DESIGN: Easy on and off Fits most footwear Allows you to walk naturally on any winter surface with its spike-less, lightweight design Can be worn in temperatures as low as -41degF Made of injection molded thermal plastic elastomer with hand-wound rust-resistant coils for maximum strength and durability Provides 360 degrees of traction Reduces the risk of fall and subsequent injury