Ergodyne TREX 6304 Performance Traction Cleat Grips Ice and Snow, One-Piece Easily Attaches Over Shoe/Boot with Carbon Steel Spikes to Provide Anti-Slip Solution, Medium TPE REDUCE RISK OF FALLS AND INJURY 12-rugged carbon steel cleats studs on ball and heel of foot grip slippery terrain and increase stability while walking, hiking, or running on snow and ice. DURABLE FLEXIBILITY Tested to remain flexible in temps up to -40F (-40C). Stretchable rubber construction won't break in cold temperatures providing reliable everyday traction. SECURE COMFORTABLE FIT Made with stretchable rubber material for easy slip on and off while maintaing a snug feel. UNIVERSAL WEAR Versatile traction cleat is available in multiple sizes and fits over any boot or shoe for tenacious grip, stabilizing wearers during any winter outdoor activity. LIGHTWEIGHT AND PORTABLE Material is lightweight and can be folded small enough to be stored in a pocket or pack when not being worn.