A simple cotton mattress protector is quilted, lightweight and machine washable. Cotton is a breathable fabric and will help the mattress stay cool for hot sleepers. Add in latex, wool or moisture-wicking and temperature regulating fabrics and comfort is significantly improved. Mattress pads or toppers with latex and/or wool are dust mite and mold-resistant. Polyester is a durable fabric and is easy to wash and maintain and can be less expensive than other fabrics. Polyester does not wick moisture, although it can be fast-drying, and is not considered hypoallergenic. Polyester is less wrinkly than cotton giving you a smoother foundation to sleep on. Most mattress protects include a layer that also contains a waterproofing material like vinyl or polyurethane.