XL memory foam is Great for older dogs. Our 8 year old 80lb pit boxer mix is a nester/digger, he has ripped and scratched apart one of those cheap $20 beds every 3 months for years. He is older and has a touch of arthritis now so I took a chance on this and I do not regret buying this bed at all. I got the denim it's soft but tough and doesn't make that horrible canvas noise when he walks or scratches at it. On month 3 now with minimal wear. I wash the bed once a week with tide cold water and fabric softener I also dry it on low even thou you are supposed to lay flat to dry. The cover is replaceable but shows little wear and the foam is still just fine he diggs at the bed several times a day.At first he didn't really like it I had to put the bed in his favorite stop and put his blanket on top. After that he was fine but he still won't lay on it if the plush blankets aren't on there so he can digg them into a nest.I'm giving it 4 stars for the high price, the bed is great I only bought it at over $100 because it is USA made. Also I would not recommend this as a shared bed for dogs over 120lbs combined weight. If I sit on this bed I sink and can feel the floor.