Plus Fitting System features two removable insoles that allow you to customize your fit. Dual-density outsole offers durable slip resistance and comfort. Foam-padded collar and tongue help reduce heel slippage and won't irritate sensitive skin. Leather upper, spandex upper lining, Dri-Lex sockliner, polyurethane insole, tempered steel shank... Polyurethane outsole. Care: Buff with a leather cleaner or polish. Wipe off with a dry cloth.