After unwrapping and letting the mattress inflate for 2 days I slept on it. It was absolutely not comfortable and was about to call and return. I read the instructions which say to give your body a couple of days to adjust. Let me tell you. By day 3, I was in love with this mattress. It’s a pillow too soft, yet firm. It’s perfect for me. So happy with this purchase given how hard it is to find a good mattress without testing.