Silk Pillowcase - Royal Navy BlueA natural product with hypoallergenic benefits that does wonders for your hair, skin, and overall health while you sleep. Each pillowcase is handmade and crafted in 6A Grade 100% high quality 22 momme Mulberry silk thread, which is basically the equivalent density to 1000 thread count of Egyptian Cotton. The difference between our 100% Mulberry silk and other materials like regular silk, cotton and bamboo is that, each of our pillowcases are treated