Such a great ramp for my two Goldens, aged 14 and 13. They went up it without hesitation the first time. It is heavy, but that is what makes it well made. I live at the coast and needed this to be rust proof.  There are a few parts that seem to be rusting but it's held up for at least four years without falling apart . I am using it for more than my car. After our daily walk on the beach, I clean my dogs up on my wood patio table.  I place the ramp on the edge of the table with no problem at all. My dogs scamper up and down it at will. Good rubberized surface for great traction. The underside that rests on the car bumper or my table is cushioned so no damage has occurred to either surface. It also folds, so after loading the dogs, I slip the ramp in next to them. They lay on it while traveling. For solving the problem of lifting older dogs into an SUV, this has been great. I should have purchased this years ago to save my back.