This was the second pet ramp that I ordered. I had to send the first one back (SolveIt brand) because it was total garbage for the exact same price. All the other ramps beside this one were made with sandpaper that cut my dogs paws and provided no traction for climbing. The PetSTEP is designed more intelligently, made of rubber with horizontal ridges that make it easy for your dog to climb and not slip. It also has guards on the sides, and provides good width. My dog who just had knee surgery was having a hard time getting into my Toyota highlander, and this ramp has really helped her regain confidence about going for car rides. It also has a 5 year warranty, and doesn't look like it plans on giving out any time soon. I walked up it (170 lbs) and it felt very stable. I saw that people complained about the weight and size, but it isn't any bigger or heavier than the first ramp I ordered - just a lot higher quality. Overall, good product that your dog can use for a long time.