There are two different ways to wear——you can wear it as sandals or flip flop. Constructed with lightweight and soft material. The upper is made of EVA Feature: Anti-Slippery, Hard-Wearing, Quick-Drying Perfect for indoor or outdoor use. US Size 5 6 7 8 9 10 11 12 EUR size 36 37 38 39 40 41 42 43 inch Foot Length 8.5 8.7 9.0 9.3 9.5 9.8 10.1 10.4 cm 21.6 22.2 22.8 23.5 24.2 25 25.7 26.4 Product measurements may vary by up to 3~5mm