I received these unused shoes from someone, but the size didn't fit. ● These shoes are designed to prevent slipping and protect feet during water play. Perfect for playing in rivers during the upcoming season. These shoes are ideal for children who enjoy water activities. The upper is made of mesh material, providing excellent water drainage and breathability. The Velcro tape on the instep allows children to easily adjust the fit. The outsole features Aqua Gripper, which provides excellent grip even on wet rocks. 【Materials】Upper: Polyester/Mesh/Climaprene® Sole: Aqua Gripper