Patented Skechers Arch Fit® insole system with podiatrist-certified arch support Podiatrist-designed shape 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 Breathable athletic mesh knit fabric upper with a lace-up front Air-Cooled design Cushioned lightweight midsole with flexible traction outsole Machine washable