Top craftsmanship & luxurious material: the soft silk fabric looks rich, smooth and lustrous. A dapper take on our most popular lounge and sleep set for her, real and natural silk is light & smooth. Button Fly closure 100% 6A GRADE MULBERRY SILK FABRIC: This women’s boyfriend style silk nighshirt is made of 100% real mulberry silk charmeuse, 6A Grade, 22 momme. High end, Sophisticated Knitting. Feels Light and Crisp Against Your Skin; Luxury silk fabric marries sheer elegance with luxurious comfort.