Mattress Reviews 2024 Sleep Number Mattress Reviews. In this sleep number bed review, we cover every detail about sleep number beds, plus factors to consider before making a purchase, including who manufactures the beds, what. Sleep number’s c4 mattress is one of the most standard sleep number models but comes with a comfort layer that provides body contouring.
The c2 is the only sleep number mattress that doesn’t come with a comfort foam topper. Sleep number’s c4 mattress is one of the most standard sleep number models but comes with a comfort layer that provides body contouring.