EVA FABRIC Lightweight EVA fabric reduces foot pressure and is highly waterproof and durable. EASY TO ON AND OFF Two shoulder straps make it easier to on and off, and adjust the tightness at any time for a perfect fit. SOFT AND FLEXIBLE The fabric used has good flexibility and elasticity, and will not deform at all. NON-SLIP SOLE The sole is made of EVA fabric, which is light on the feet. The sole is unevenly textured to enhance grip. Read more Please note that the material used in this men's sandal is not the same as other styles of sandals. This sandal is more suitable for swimming pool, garden, walking, shopping, taking out the trash, walking the dog, etc. The style of this sandal is also relatively simple, but the comfort is not bad! Read more 7 US/38 EU = Foot Length: 9.44" (240 mm) 7.5 US/39 EU = Foot Length: 9.65" (245 mm) 8 US/40 EU = Foot Length:9.84" (250 mm) 8.5 US/41 EU = Foot Length:10.04" (255 mm) 9 US/42 EU = Foot Length: 10.24" (260 mm) 9.5 US/43 EU = Foot Length:10.43" (265 mm) 10 US/44 EU= Foot Length:10.63""(270mm) 10.5 US/45 EU=Foot Length:10.83""(275mm) 11 US/46 EU=Foot Length:11.02""(280mm) 12 US/47 EU=Foot Length:11.22""(285mm)