About this item 100% Mulberry SilkThe most luxurious silk of all – Pure 25 Momme Mulberry silk. Compared to 19 Momme, 25 Momme silk has almost 30% more silk per square inch. That results in a more durable, longer lasting silk. Silk’s natural anti-aging properties help keep skin moisturized and hair smooth.Made with a charmeuse weave, resulting in a supple, luxurious caress that you hope to find in a pure silk pillowcase.Side envelope enclosure with hidden pocket to keep pillowcase snugly on the pillow.Hypo-allergenic. Health and Beauty Professionals recommend silk because of its natural moisture retention properties.Silk pillowcases have been used by celebrities and Hollywood starlets for decades to keep their skin and hair smooth and youthful. It’s your turn to own a luxurious silk pillowcase.