Sandal from Pax. Outer of synthetic. Adjustable buckle around the ankle. Inner of leather & textile. Outer sole of rubber. Interior dimensions: EU24 (160mm) EU25 (167mm) EU26 (173mm) EU27 (180mm) EU28 (187mm) EU29 (193mm) EU30 (200mm) EU31 (207mm) EU32 (213mm)