This ramp is perfect for pet circles and other enclosures that are raised off the floor due to its casters. Ideal for senior dogs, puppies, and dogs and cats that can't step over obstacles. The top and bottom surfaces have different non-slip materials, so the mat itself won't move easily, and you don't have to worry about your dog's paws slipping on the ramp. It comes in a white and gray color scheme that easily blends into any room.