Patented Skechers Arch Fit® insole system with podiatrist-certified arch support developed with 20 years of data and 120,000 unweighted foot scans Removable insole helps mold to your foot to reduce shock and increase weight dispersion Glide-Step® geometric midsole designed to provide natural momentum with every step SKX GRIP™ rubber outsole delivers enhanced traction and long-lasting durability Skechers M-Strike® technology promotes efficiency in each stride. This midsole configuration creates smooth transitions from landing to toe-off Lightweight, responsive ULTRA GO® cushioning