Zero G®: Built with super-lightweight materials keeping your feet at ease all day long OrthoHeal: features removable orthotic insoles with anatomical arch support to improve mobility, enhance comfort and help relieve foot pain. Soft full grain leather uppers Breathable pigskin lining Waxed round lace Removable orthotic insoles for arch support to relieve foot pain with mesh socklining Lightweight EVA outsole with genuine leather welt