I now own an extra long twin (soft, 11 inch), a queen (soft, 11 inch) and now this king size 14" gel, in soft version that my wife and I sleep on. I bought the twin a few years ago as a "test" of comfort dreams mattresses. That led me to buy the queen for the guest bedroom, and now this gel king, which is the best one yet. It's fantastic for us because we are side sleepers. I'm about 6'5" and weigh 250, and I haven't slept on a better bed. There is a noticable difference in the amount of retained heat relative to the non gel versions I own. Highly recommend.