Bio sandals with open heel and buckles. These Bio style sandals, made of EVA materials, are a classic must-have. Thanks to their design inspired in the traditional cork sandal, you can wear them to go to the beach or for your wellness zone without giving up your style. Their branded buckles provide the best adjustment, and their waterproof material, washable and light, makes them the perfect all-terrain accessory. Buckle with plastic frame and pin.