The Half STEP II Multi-Purpose Ramp is the perfect solution for pet owners who travel often or have older animals that need help getting in and out of vehicles. It is created to ease the pain of arthritis and dysplasia so that our best friends can still go with us to our favorite places. Owners will love its easy-open easy-close design which makes it incredibly easy to use and store. Two balanced ergonomic handles and its lightweight are meant to make portability simple.Crafted from high-quality materials that won't trap odors the ramp will neither rust nor corrode and washes quickly with just soap and water. You can even use it in lakes and pools because it floats in water and won't sink. A ribbed non-slip surface with unique rubberized coating ensures the ultimate in safety for both dogs and humans.If you are using the Half STEP II Multi-Purpose Ramp for the back door of a standard four door sedan the back door may not open wide enough to accommodate its 17-inch width. The back doors generally will not open fully such as a front door which will open wide enough to accommodate our ramps. Before ordering one of our ramps for back door entrance of your four door sedan we suggest you measure the opening to determine if the back door will open wide enough. Please remember that the ramp fits all front doors.