The Chieftan Garden Tray has a multitude of uses. With an exceptional depth of 5 inches, it works great for potting plants and also for use under grow bag and potted plants, etc. Perfect for the kids too, for messy play in the garden and for use with sand and water tables. Tray also works great for mixing cement ,concrete, mortar, sand or other building materials. Made of recycled polypropylene and built to last! Tierra Garden is an importer, designer and manufacturer of distinctive garden products that has developed a reputation for quality products and a broad selection of unique garden hard goods.