Kimono Turquoise Sleep Mask: Authentic Kimono Fabric from a 400 year old mill in Kyoto Japan. This is a rayon chirimen exclusive to Kimono fabric. The flowers, mountains, rivers and bridges are part of a very old print used for hundreds of years. Designer luxury silk sleep mask made with hypoallergenic silk and cotton helps prevent wrinkles and improves sleep. It has light flexible elastic strap and pure unbleached cotton padding.