This buttery soft and smooth flat sheet is kind to skin, and will lull you into a wondrous beauty sleep! Built to last, pure silk at 22 momme will withstand frequent machine washing. Dyed with non-toxic dyes. Designed in Toronto.Material100% mulberry silk22 momme (600 thread count) Silk charmeuse Grade 6A (highest grade)Non-toxic dyesOEKO-TEX® 100 certifiedBenefit of SilkHydration: less absorbent than cotton, your skin and strands will resist moisture lossLess friction: smooth and supple, feels like a second skinHypoallergenic: naturally resistant to allergens