Yaktrax Medium (Shoe Size: W 10.5 12.5/M 9 11), Gray/Red

Traction cleats designed by runners specifically to fit over running shoes allowing users to continue training in winter Made of combination of 3mm carbide-steel spikes and 1.4mm stainless-steel coils to provide unbeatable traction Provides 360 degrees of traction on cold surfaces for all-direction stability Rubber foot frame with formed-toe and over-foot straps secures the runner’s foot in the device; reflective heel and side straps for safety Tested safe from breakage in temperatures as low as -41 degrees F; available in S, M, L, and XL sizes to fit most shoes