We have had this king split for about a month now and honestly I’m still not sure how comfortable it is. We upgraded to the more expensive mattress option with the cooling top and that’s great as long as you dont put a protector on it. That takes away from cooling effects. Do not like the ghost pillows at all. Gave me a headache and a neck ache when I slept on them. In order to use the cooling side you also feel the ghost bed stitching which is way too big. They should have stitched that on the opposite side of the cooling material. All in all, I waited to give the review until after we had slept in it for awhile. The mechanics of the bed seem to be working great but the jury is still out as to if we will like the mattress comfort in the long run.