Most ramps are designed for safe entry into the boot section of SUV vehicles (and similar). For pet owners with hatchback or sedan styled vehicles, the Side Door Ramp Adaptor attaches to your vehicle's side door and secures your pet's ramp in place for safe entry into the back seat. Easy to set up and remove. Fits all vehicle doors. Compatible with the Solvit Deluxe Telescoping Ramp and the Solvit Ultralite Bi-Fold Pet Ramp.