The Tempur-Pedic Ergo ProSmart King Adjustable Base offers immersive sensory technology to calm your body and mind at bedtime. 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. It has the ability to 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 Wave Form Massage and SoundScape Mode alleviate stress and muscle tension through sound wave vibrations and playing sounds or songs that help you relax and unwind. Available in various sizes. Please note: a king mattress requires two twin xl foundations (sold separately).