Rubber sole Strong stitches on the upper and sole to avoid water shoes falling apart;thick stretch fabric upper not break easily during walking or running. Quick dry and breathable materials of the aqua water socks keep kids feet comfortable all the day. Lightweight and anti slip thick outsole for the swim water shoes, easy walking on beach, pool or hot sand. Smooth material and elastic ankle design of the pool sock shoes prevent blistering; slip on style,easy for kids to take on and off. Perfect for water park, water sports class, Yoga Training, beach, swimming, pool, dancing, etc.