This bed is what I’ve been looking for. I have a black Labrador who has a joint problem and her flat mattress type bed which was becoming difficult for her to get up off. I was uncertain about size so I measured her bed as to the measurements online. The large is plenty big enough and she loves it. A great buy. My only grievance is that the plastic bag it was delivered in was split and the bed was almost out of it. Would still recommend to others.