Sandbox Cover With Drawstring, Square Dust-proof Beach Sandbox Cover, Waterproof Sandpit Swimming Pool. The sandbox cover is made of 420D polyester fabric with a waterproof PVC coating, providing enhanced durability and long-term performance. Designed for use as a sandbox cover, it helps protect children's toys from dust, sun, and rain. Made from durable, lightweight fabric that is both dust-resistant and waterproof. The drawstring design ensures a secure fit over the sandbox, keeping contents clean and dry. Tear-resistant, weather-resistant, and breathable, this cover is easy to clean and built to last. Compact, foldable design allows for easy storage and transport, making it convenient to install and remove without taking up space.