Give your hair (and skin) the beauty sleep it deserves with Slip's anti-aging, anti-crease, anti-bedhead pillowcase. Made of signature slipsilk high-grade (6A) long fiber mulberry silk with a thickness of 22 momme to reduce friction while you sleep. It's like an eight-hour beauty treatment every night! Features. Standard queen-sized pillowcase Made of slipsilk: 6A long fiber mulberry silk 22 momme Anti-aging Anti-sleep crease Anti-bedhead Zipper closureContent + Care. 100% Slipsilk (mulberry silk) Machine wash delicate ImportedSize. Dimensions: 20" x 30"