The pet step with a difference! Only 5 1/2 lbs, the 4X4 Pet Step is the solution all large breed dog owners have been looking for. Made from heavy-duty nylon glass filled plastic with a non-skid surface, this lightweight step is veterinarian endorsed and has the American Pet Association Seal of Approval. The 4X4 Pet Step easily slips into any 2? trailer hitch receiver and is small and light enough to stow comfortably in the back of your SUV or truck.