Made of natural wood, no dye and coating, do not worry about bird eating it. Easy to instal and Storage,Foldable,If you don't use it ,you can fold it and not take up space. It can instal in the cage ,indeal for birds to Stand up and play front the mirror. Give your pet a treat and play make your pet more healthy and happy. Product Dimensions:3.5 * 3.5 * 3.7 inches Fits small birds.