I have a friend who felt the cover was really uncomfortable as well. He had a really expensive mattress, but said he could feel the cooling tubes in the cover.

I have a friend who felt the cover was really uncomfortable as well. He had a really expensive mattress, but said he could feel the cooling tubes in the cover. I'll do you one better on "collecting sleep data". I've been in the neurotech/sleeptech space for the last 5 years developing https://affectablesleep.com https://affectablesleep.com After getting an Oura ring years ago, and it telling me "you didn't get enough sleep[deep, REM]" I was left thinking "so what?? don't tell me I didn't do it, help me to do it!" From what I've seen in the market, possibly with the exception of 8Sleep or CPAP (for those who need it), is that everyone is focused on counting minutes, and adding a few minutes to sleep. Particularly "fall asleep faster" where they promote "fall asleep x% faster" where x% in minutes is like 7 or 8 minutes. What is really valuable in sleep, and particularly deep sleep, is not really the time, it's the restorative brain functions, and at the moment, we are focused on one metric slow-wave delta power. It's not how many minutes you sleep, it's how much sleep is in each minute. Of course, there is sleep data along with that, but if your sleep is optimized in the time you get, do you really care about the daily data?