Made usingslipsilk&trade 100% pure silk Highest grade (6A) long strand pure mulberry silk 22 momme Certified non-toxic dyes Pure silk filler and internal liner Not all silk sleep masks are created equal Includes 1 sleep mask Slipsilk™anti aging anti sleep crease anti bed head pure silk pillowcase Slipsilk™ is specially-commissioned and made to our exacting standards developed and refined over ten years to provide the ultimate combination of shine thickness softness and durability. We use the highest grade (6A) long fibre mulberry silk with a thickness of 22 momme and enforce the strictest quality guidelines including non-toxic dyes.Silk fibres are significantly less absorbent than many other fibres so they can help keep your skin's moisture and expensive face and hair products where they belong on your face and hair.sleep with slip™ Warning: this product is highly addictive Recommended use: 8 hours daily for maximum results