Slipsilk™ anti-aging, anti-sleep crease, anti-bed head pure silk pillowcase, we spend a third of our lives in bed. By the time we are 60, we will have slept for an average of 20 years. 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 fiber mulberry silk, with a thickness of 22 momme and enforce the strictest quality guidelines, including non-toxic dyes. Cotton grabs your hair and twists it at the root throughout the night, damaging hair and causing bed-head in the morning, whereas slipsilk™ is so gentle on your hair, it allows your hairstyle/blow-dry to last overnight. Unlike cotton, which draws moisture from your face, hair & scalp, slipsilk™ breathes and is a natural temperature regulator. Slipsilk™ is a natural fiber, whereas synthetic satin is rougher, thinner and `sweats’, essentially negating the benefits. 20" x 36". Made in USA.