Screenshots: Julia Forbes
I spoke with Raj Mills, Sleep Number’s senior vice President of partnerships and research. She tells me, “Our AI models take into account foam depth and still maintain the same level of accuracy regardless of how far below the surface of the bed the sensors are.” She shares that they are cohesively performing a ballistocardiograph, which monitors the blood flow generated by the heart and ultimately determines your heart rate score. How effectively they can do so is debatable.
Ultimately, I found there was quite a bit of variance in terms of the nightly score calculated on both ends. On good nights, both pointed to higher scores, but the final number could differ by up to 10 points. On the Sleep Number app, I found it concerning that most of the time, my Sleep Score numbers were not as high as I thought they would be—my average for the three-week test period was a 74.
Matrix Mattress
If you prefer a remote, that’s either a separate cost ($50) or potentially a different bed altogether. The only way to operate this mattress is by creating an account and downloading the app in advance. Security of one’s personal data is top of mind for many, and I wanted to know how the vast quantities of data accumulated by Sleep Number’s customer base were managed. When you first sign up for your account, you can either share your data with Sleep Number or opt out altogether. For those who share their data willingly—about 550,000 individuals, according to Mills—Sleep Number’s data science team performs research and presents findings from its consumer base at major sleep conferences, including SLEEP and World Sleep Congress.
It’s a comprehensive data set to work with, and it continues to evolve through the adaptive AI at play, which includes SleepIQ technology. According to Mills, the company’s AI models are structured to analyze sleepers at an individual level, because every sleeper has a different build, age, pain issues, and various needs. According to Sleep Number’s privacy policy, the company doesn’t sell your information to third parties, and you can withdraw your consent to share information at any time. At the end of the day, Sleep Number is a business that can potentially use your data to develop new products, and it’s up to you whether that’s worth it or not.
Power Couple
An adjustable base is what enables each side of the mattress to independently adjust head and foot angles. I tested the FlexFit 3 adjustable base alongside the P6 mattress, which is Sleep Number’s top-of-the-line offering. It offers timed foot warming (which takes about two minutes to heat up and has a two-hour default setting) to help blood flow away from your core and aid faster sleep. There is also a zero-gravity setting, partner snore (elevates the head and neck slightly to help open up airways), and motion-detect underbed lighting. I loved the gentle light source for late-night bathroom breaks, and the split king adjustability allowed me to partake in late-night reading without disturbing my partner. However, the only feature that separates the FlexFit 2 base from the FlexFit 3 is the inclusion of foot warming, and it’s a $400 upcharge for a queen size.
Photograph: Julia Forbes