This mattress is better than I expected. I bought it for the trundle part of a daybed for our guest room. I didn’t want to spend a lot on a mattress that would barely get slept on, but still wanted it to be comfortable. I cannot believe how comfortable this mattress is for the price I paid! I even took a nap on it to test it out, and was very happy with it. As soon as I opened it it inflated to almost the full height. It was fully inflated just a few hours later when I came back to check.  Very pleased with this mattress.