The TREX 6304 Step-In Ice Cleats are lightweight ice grips for boots and shoes that provide tenacious traction and extra stability on ice and snow. Stretchable one-piece design offers grip to prevent slip and fall injuries on the ice. Contoured step-in 3D design easily wraps around boots and shoes for a superior fit. These ice grippers feature 12 rugged carbon steel cleats on the ball and heel of foot for grip on slippery terrain. Available in multiple sizes and will fit over any style of boot or shoe for traction and stability during winter work or other winter outdoor activities. Tested to be flexible in temperatures down to -40°F (-40°C), the contoured 3D design allows you to step into these ice traction cleats for fast and easy on/off. TREX Ice Traction should fit snugly on your boot or shoe. Stretchy, one-piece design means no tightening or adjustments needed. Use your shoe/boot size to determine the approximate size.