CleanRest® mattress covers and pillow covers are the first and most important control for those who have dust mite, pet dander, pollen, and mold spore allergies. These doctor recommended pillow covers are made with MicronOne® allergy blocking fabric technology which uses 100% micro denier polyester fabric that is so tightly woven that it has a maximum pore size of 1 micron. This zippered encasement protects your sleep by covering all of your previously purchased favorite pillows and still giving you the healthiest sleep possible. Wake up free of allergy and asthma symptoms today with CleanRest®.