On our ultra-comfortable, biomechanically engineered, standard MICROWOBBLEBOARD midsole for shock absorption & instant underfoot pressure diffusion. This has a generous fit. our light, modern update of the classic fisherman sandal straps in soft fabric touch-&-go back-strap fastening & gently-elasticated instep strap ensure a perfect fit ultra-lightweight EVA outsole (with hardwearing rubber pods at front & back pressure points) height-enhancing midsole 41mm/1.6 inches