Cotton Cool Mattress Protector2 in 1 Fitted Sheet Mattress Protector Absorbent, air vapor porous and waterproof 80% Jersey Cotton Sleep Surface that is cool and smooth Dust mite barrier and allergy protection Discrete and comfortable to sleep on Description. The Cotton Mattress Protector keeps your bed clean and comfortable for a good nights sleep Sleep comfortably with the soft, absorbent, breath ability of cotton. Allows skin to breathe naturally, promoting a relaxing sleep