I bought the mattress in January as I have been suffering with a bad lower back and thought this would help. The next morning I woke up in agony but thought I had to give it a few weeks trial, it only got worse and finally had to take it off and my backs getting better. I’m sure if you don’t suffer from a bad back it’s very comfy but not for me. My main disappointment is that Panda don’t offer a longer free trial period as a month is not long enough, especially compared to its competitors. I now have a king size mattress topper taking up room which I can’t sell and don’t want to throw away!