Sleep number True Temp Mattress layer King NWOT bought with bed purchase however use a pillow top and never had use for this Sleep number mattress layer, king size, white color. DETAILS 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. This temperature regulating mattress pad is 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. **Offers welcome**