After the initial disappointment of waiting two weeks for the mattress to be delivered, I was very happy with the product. I left it out flat on the floor to air out and expand as it says to do in the instructions. There is a pleasant aroma from the mattress. It is the most comfortable mattress I have ever slept on. I actually bought it for my 4 yr old, he needed to convert from toddler to big bed. It's a twin size and my son has lots of space to move around. Very happy with this purchase!