Sleep Number True Temp Mattress Layer

Like new!! Only used for 3 nights! Fits King Flex Top Mattress Sleep at just the right temperature with 37.5® technology. Active particles move heat and humidity away, continuously adapting to help keep you comfortable throughout the night. Enhanced with a conforming, silky-soft, cool-to-the touch cover. Hypoallergenic for sensitive sleepers. Corner anchor bands hold it in place on top of your mattress pad. Logic™ Label takes the guesswork out of where to start making your bed.