I ordered your large Memory Sleeper a couple of months ago for my lab. He's 11 years old and slowing down, and I'd noticed for awhile that he seemed to sleep restlessly--always changing positions and having to move around a lot to get comfortable. After only a short time, I began to see a difference. He is getting a very restful sleep now, and his energy level has improved enormously. I definitely recommend this bed to anyone who has an older dog--thank you!!