PureGLO's hair night sleeping hair wraps are all made of 100% natural Mulberry silk. The polyester's highest quality and silk increase the breathability and heating performance of hair bonnet. super smooth, lightweight, breathable, very stretchy and comfortable. Ideal Gift for New Year, Valentines, Mother's Day, Thanksgiving, Christmas, Birthday, wedding anniversary. Shop pure silk hair bonnet for sale at PureGLO Naturals.