We have an 8-year-old Wheaten Terrier who weighs about 40 pounds. She loves riding in the back of our SUV which sits pretty high from the ground. She can easily jump in, but jumping down seems to be too much of a jolt to her joints, so the vet recommended a lift. This is great.  We keep it in the car. It is light enough to fold and unfold with ease. Our pet was a little skeptical at first, but we guided her with a leash down the ramp a couple of times, and now she waits for me to open it before she disembarks.I hope it adds years to her life.