No 'learning to walk' as Yaktrax Pro Traction Device for Shoes and Boots offers the same stability as your natural walk. The Yaktrax Pro's SkidLock coil system creates secure footing without any feeling of slippage either side to side or front to back. Black. One pair. Fits shoe sizes: S (5-8.5), M (9-11), L (11.5-13.5) or XL (14+). Yaktrax Pro Traction Device for Shoes and Boots