Yaktrax Pro traction cleats instantly provide better traction, confidence and safety for walking, jogging, or hiking on packed snow or ice. The Pro's low-profile, patented coil design provides 360 degrees of traction on slippery ice and snow, giving stability in all directions and allowing users to move about naturally as they would normally have on dry surfaces. Made of high-strength, abrasion and rust-resistant 1.4 mm steel coils and heavy-duty natural rubber, the Pros are durable and easily conform to the shape of any boot or shoe. For oversized shoes or boots, Yaktrax recommends purchasing one size larger than your normal shoe size. Traction cleats that fit over shoes for safely walking, hiking, or jogging on packed snow or ice Made of high-strength, abrasion-resistant 1.4 mm stainless-steel coils and heavy-duty rubber Provides 360 degrees of traction on slippery winter surfaces for all-direction stability Durable rubber foot frame with removable over-foot strap ensures an excellent fit Tested safe from breakage in temperatures as low as -41 degrees F. Size--Women's 10.5-12.5/Men's 9-11 New in Box r18