Water shoes, amphibious, lightweight, breathable, aqua shoes, beach shoes, yoga surfing compatible, unisex Sizes are 21.0cm to 21.5cm. [Applicable places] Water play, swimming, walking, amusement parks, outdoor activities, river play, water parks, etc. These are amphibious shoes. They are there for you, protecting your feet. Outer material: Polyamide: 86%, Spandex: 14%, Sole: Rubber sole, Closure: Slip-on, Heel type: Flat. The elastic material and smooth neck design make it more convenient and resistant to put on and take off. Soft and safe rubber outsole: Wearable and protects feet from being scratched by sharp objects, the highest quality rubber sole. Management number 6