I ordered the 12 inch king size Breeze Mattress and it has 2 sides to lay on. You can actually tell the difference between the soft side and the medium firm side. Both sides are comfortable to lay on but my 6 year old and her dad prefer the soft side. So far, this mattress has been the best mattress anyone could hope for and for the price it is superb. I totally recommend this mattress 100% I love it. I use to use a pillow but for this comfortable mattress is not necessary!!!! you can tell how good this mattress aligns the spine.