The TEMPUR-Ergo Smart Bases powered by Sleeptracker-AI creates a completely integrated system with personalized sleep analytics which silently monitors you or your partners breath and movement and responds to snoring automatically. This adjustable base combines premium technology like Sleeptracker which provides a personalized sleep report so you can keep track of your health as you sleep. The four-zone massage intensifies your sleep with four zones, two zone at your head and two at your feet with three wave levels; and a zero-gravity preset option creates a weightlessness feeling relieves pressure off your back while you sleep. QuietMode: Gently tilts your mattress to an anti-snore position. Zero Gravity Preset: Elevates your head and feet to closely simulate weightlessness. PerfectSeat: Exclusive Tempur-Pedic Technology that optimizes the shape of your mattress so you can relax in a more natural position. Pillow Tilt: Enhance your head lift with a slight tilt around your neck.