MEPHISTO. 5136656. HELEN CORK SANDAL. LIGHT SAND LEATHER MOSAIC PRINT. This marvellously lightweight ladies toe post sandal with its relaxed look promotes a perfect sensation of well-being. The unique SOFT-AIR technology integrated in the cork midsole guarantees an effortless walk. The AIR-RELAX technology respects the anatomy of the foot to prevent fallen arches. Adjustable strap with buckle fastening.