Extend the life of your pillows with an added layer of luxury and protection. Our 19 Momme Silk charmeuse pillow covers and cushion covers are hypoallergenic and dust mite resistant. In fact, silk is the most hypoallergenic of all fabrics and is also resistant to mold and mildew. Lightweight but extremely durable, a thread of silk that is of the same diameter is stronger than steel. All our silk covers passed International Certification: OEKO-TEX Standard 100, skin-care, completely chemical free.