MEPHISTO SHARK FIT | Men Sandals Leather Nubuck. This sandal will adapt to any style and to all your summer activities. The SOFT-AIR midsole and SHOCK-ABSORBER help to minimise impact for an effortless walk with a spring in your step. The AIR-RELAX technology respects the anatomy of the foot and the AIR-BAG system ensures comfort. This sandal, with wide adhesive straps, is embellished with a fastening clip on the instep, making it even easier to slip on.