Our adult daughter was about to have foot surgery and had to be off her feet for 8 weeks. The only bed she had that she could bring to our house was a futon with an uncomfortable mattress. We bought this for her and it has been so amazingly comfortable for her during her convalescence that we bought another one for our bed. My husband said that it was the best sleep he’s had and that he gets up without his usual morning stiffness. 
Our daughter’s two adolescent large dogs and both of our Rottweilers all love sleeping with her on the futon with the mattress topper. One of our adult Rottweilers has severe hip dysplasia and arthritis in her other joints, as well, and she absolutely loves lying on this mattress, which is super comfortable for her. We’re thinking about getting a twin to use in her daytime cushions. 
We’re very impressed with this mattress topper and absolutely love it!