We purchased the dog stairs because our dog had injured herself and the Vet said no more jumping on and off our high bed. I looked everywhere for something tall enough and came across these. We like them, but not love. They are unstable when out 53 lb dog is going up and down them. I will hold the top for her when she uses them. I she I had gotten the one with the cover because I think the plastic and our dogs nails make to much noise and it scares her.  They work for now.