my partner and myself both lay on each side in ditch, 1 weigh 154 and pounds, not tall, that should not be and in the middle of the mattress is a high rise, have to lay a pillow on the outside so i do not roll off the bed. my partner weighs 214 pounds and regular size. I paid a lot of money and the mattress i think is not too old. We just lay and sleep on it. All in all we are very unhappy.