First: Mattress manufacturers care because cotton between your body and the steel inner springs of a mattress has a lot to do with how comfortable you are sleeping on their mattress. That comfort is a benefit that you pay the manufacturer's sales distributor for as it gives you a good night's rest. Second: You and yours care about the cotton in the mattress as it not only gives you comfort, it actually protects you - in part - from the steel springs which flex in response to your body movements.
bonnell spring mattress
