The Indoor Bi-Fold Ramp is a great alternative to indoor Pet Stair. The removable carpet tread provides a sure grip for your pet and it is easy to remove for cleaning. Your pet can now get to higher areas in your home without climbing up stairs. The Pet Gear Travel Lite Bi-Fold Pet Ramp allows your dog easy access into your vehicle or other hard to reach places. The removable carpet tread is machine washable. The bottom of the ramp has rubber grippers to maintain its position. This lightweight ramp folds in half and has a carry handle for easy transport and storage.