Silli Me Large Dinosaur Rubber Backed Children's Play Mat with Roads and Train Track Better than a play rug. Perfect for toy dinosaurs, trains, and cars! Made of mouse pad material Bold vivid colors on a smooth polyester surface makes it easier to roll cars and trains Rubber backing makes it non-slip on hard surfaces and adds cushion. Also works well on carpet 54" wide x 45" high provides large play surface. Easily rolls up for storage Great for imaginative play and hours of fun - Kid tested!!