Sole Material Aquagrip Rubber Outer Material Synthetic Closure Type Hook & Loop Water Resistance Level Water Resistant About This Item Water Resistant Upper: Washable polyester strap with quick-dry lining for all-day wear in and out of the water; PFC-free, durable water repellent helps shed water and prolong the quality and life of the material in the boys and girls sandals. Hassle-Free Fit: Easy for them to put on, made with a wide, adjustable hook-and-loop strap to help them get geared up and out the door quickly. Better Than Barefoot: High-abrasion rubber toe cap for durability and protection; built with a lateral support to help stabilize the ankle and heel Comfort: EVA footbed with arch support for all-day comfort; Low-profile design is lightweight and flexible for better ground contact.