PERFECT MATERIAL: 92% polyester+8% spandex Upper. Made of a diving material with breathable and quick-dry ability. Like socks, it makes you feel great flexible and comfortable in wearing. UNIQUE DESIGN: The top is sewn with double-layer fabric to enhance stability and prevent cracking during exercise. Smooth neckline designed would take care of your ankles. And heel loop attanched is easy to put sand socks on and off as well as hang them on outdoor gear. FOOT SAFETY: Foam inner sole offers a lightweight feel and durable cushioning. Wearable and top-quality rubber sole, which protects your baby feet from being hurt by sharp objects and worked great on the beach hot sand. VARIOUS STYLE AND SIZE: WateLves kids’ water shoes is a variety of styles like multiple animal prints and colorful, the design element is based on kids’ preference. Our water shoes have various size suited for infant, toddler, little kids and big kids. TIPS: Please refer to the SIZE CHART in product description. We promise exchange, return service if there are any size/quality issues, make your purchase risk free.