This 100% waterproof tray is ideal for use with Insta-Snow. Unlike wood trays, the Insta-Snow Tray is made of high-grade plastic with no paint or polyurethane, so it is impervious to the corrosive effects of water. The 3-inch high, smooth, rounded edges help prevent spills, while the built-in handles on each side make the tray conveniently portable. This high-quality, attractive tray is perfect for play therapy using Insta-Snow or sand.