Heel height: Approx. 2'' Tall. Optima is a sporty sandal, fully adjustable for ultimate comfort. Hook-and-loop straps on the heel, top of the foot and toe box allow a custom fit. Athletic-inspired and technologically unique, this sandal boasts multi-density outsoles. Removable insole and slip-resistant/non-marking soles. Removable footbed provides arch support, is anti-bacterial, fast drying. Wicks moisture away from the foot to provide more comfort.