Get your beauty rest with this pure silk sleep mask by Slip constructed of slipsilk™ – a specially-commissioned fabric developed and refined over 10 years to provide the ultimate combination of shine, thickness, softness and durability. High-grade (6A) long fiber mulberry silk with a 22 momme thickness. Created in 2003 in response to irritated skin and damaged hair, Slip creates soft pillowcases + eye masks to enhance shiny locks and the deepest beauty sleep.