Large Dog Grass Pad with Tray: 3-layer layered design, fake grass mat + 1. 5 cm high density pearl cotton pad + 34''X23'' large tray, dog grass rug is placed on the top of the dog potty tray, durable base collects and separates urine, the tray's edge is designed with heightened edges, preventing liquid spills, keeps floors and furniture from dryness and cleanliness.