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 mould to your foot to reduce shock and increase weight dispersion Replaceable Softspikes for maximum grip featuring Stealth PIN system Waterproof protection with two-year warranty. Colour: blue