polyester QUICK-DRY UPPER – High stretch breathable fabric with strong wicking performance offer you with comfortable, fast-drying protection. NON-SLIP OUTSOLE – Flexible rubber bottom with honeycomb pattern to prevent slipping during exercise and sports activities. FOOT SAFETY – Flexible thick rubber outsole to protect your feet being hurt by sharp objects. MULTIFUNCTIONAL SHOES – Perfect for water park, beach, swimming, swimming and other indoor and outdoor, leisure and other sport activities. VARIOUS SIZE AVAILABLE – Various size water shoes are designed for toddlers, little kids, big kids. When you choose the size, please click the SIZE CHART and read it before ordering.