This is a big bed. 
I'm 90lbs and I can stretch out all over it. I like that I can make a nest in the middle and have all of my toys around me. I pretty much started using it while mom was putting it together. It seemed really comfortable then, and is even more comfortable now. 
When it's cold, my joints kind of hurt, and this bed seems to be making it easier for me to want to move around. I don't know if it will help you, but I'm willing to go outside now, where I wasn't before.
Two ears up for this bed.