This mattress is absolutely the most comfortable I have ever slept on. I was unsure about having a mattress that fits in a small box and unfolds but the quality is absolutely amazing and I was so amazed that it fills out and is a standard queen size mattress. I have been sleeping on this for awhile now and I no longer have lower back pain and my husband says the same thing. I would highly recommend anyone in the market for a new mattress to try this one!!