We have a wonderful Sleep Number bed. However, after a few years, the pillowtop cushion was not providing the softness and support I need for my joints (I'm hyper-mobile and get bursitis easily.) We were told by friends that this Bodipedic 2-inch Gel Memory Foam Mattress Topper would be a good solution. It DEFINITELY IS the PERFECT SOLUTION! My husband and I both enjoy it as it provides softness without taking away support. The Bodipedic 2-inch Gel Memory Foam Mattress Topper does not cause any heat retention, and we have experienced no problems with the mattress topper at all. We love our Bodipedic Mattress Topper. It has made our Sleep Number Bed like new again. Thank you, Overstock!