I was pleasantly suprised as to how comfortable this mattress is. I sleep deeper and longer because of this mattress. I have year round indoor and outdoor allergies, so I must be careful with what I buy to ensure it doesn't irritate my allergies or asthma. This mattress only has one downside, it traps heat. If you use a comforter on your bed, with this mattress, your body heat will quickly cause you to feel hot and it only gets worse throughout the night. I recommend the use of a light blanket that breaths to help with this issue. Other than that, I am very happy with my purchase. It has NO bad smell (sometimes such items arrive with a musty smell), it unrolled easily and became flat instantly, and fits perfectly on my queen (i got a queen size) frame. The packaging is kind of intense, it protects properly so im not complaining, but it was a workout to get this out of the box/plastic and unfold it.