This is the first time I have purchased a mattress in a box and I am pleased with this mattress so far. I read that many of these box mattresses take 2-3 days to fully inflate, but this mattress was the full 8 inches after 24 hours. (I took a picture measuring it for reference). This mattress is more on the firm side, but that’s okay for me because it’ll soften over time so hopefully we can use it for a long time. Note I got it for the guest room.