Buy this. Just do it. I did so much research on these beds and finally picked this one for my 85 lb , 14-year old staffy mix with arthritis.  She has a platform to get on my bed but it still was straining those old hips and she gets up and wiggles around more in the night now, so I wasn’t sleeping. She instantly took to this. She sleeps on it almost every night and she fits perfectly, with lots of room to do her circles and stretch out. I’ve even sat on it and it’s comfy. Packaged well, unwrapped and expanded perfectly.