The Tempur-Pedic Ergo Smart Cal King Adjustable Base is an essential part of a holistic sleep system. With features including adjustable legs, under bed lighting, and a USB port, you can have a seamless sleep experience every night. The wireless remote features one-touch preset buttons and soft-touch function keys with a zero-gravity preset and child lock feature. The base can also elevate your head and feet to simulate weightlessness and take pressure off your back while you sleep. QuietMode gently tilts your mattress to an anti-snore position for less nighttime disruption.or let SnoreResponse do it automatically. To top it all off, the Ergo power base includes a 2-zone massage feature, allowing you to unwind. Available in various sizes. Please note: a king mattress requires two twin xl foundations (sold separately).