Cal King ChiliPad Cube - Dual Zone - Heating and Cooling Pad - Fits Your Existing Mattress, Delivers Precise Temperature Control, and Creates the Perfect Sleep Environment CUSTOMIZE YOUR TEMPERATURE: Dual Zone technology allows for each side of the bed to be set at a different temperature. EXPERIENCE DEEP SLEEP: The ability to regulate your sleep temperature helps you achieve deeper, more restorative sleep. SLEEP TECHNOLOGY: ChiliPad uses innovative sleep technology to create a  cooling and heating mattress pad. WIDE TEMPERATURE RANGE: Regulate your sleep temperature from 55F to 110F. SATISFACTION GUARANTEE: If for any reason you arent loving the ChiliPad, contact us and we will get you taken care of.