New in box. KING Box has been opened to inspect item. Unwanted Christmas Gift.

Retail: $419.00

The Eight Sleep Tracker is a dual-zone sensored mattress cover designed to personalize and improve sleep for everyone. Eight senses and analyzes multiple data points from your sleep patterns and bedroom environment, to determine the conditions that help you, and even your partner, rest your best. Unlike wearables or smart watches, Eight’s advanced algorithms use more than just your wrist’s movement to determine how you are sleeping. Plus, you don’t have to remember to wear it every night.