After 1.5 weeks of sleeping on this air mattress, I am overall very impressed! The middle of the mattress stays firm throughout the night. Usually, I get backaches from softer beds that tend to sink in, but no problems so far with this air mattress so far. I have reinflated it about 5 times the entire time I have had it because it looked a little sunken in. Otherwise, it still felt firm to lay on. The queen size is true-to-size. Also, the headboard is a great feature that prevents pillows from falling off at the head of the bed. I would definitely recommend this to friends and family.