This buttery soft and smooth duvet cover 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 charmeuseGrade 6a (highest grade)Non-toxic dyesOEKO-TEX® 100 certifiedDuvet cover has zipper closureBenefit of silkHydration: silk is less absorbent than cotton, your skin and strands will resist moisture lossLess friction: silk is smooth and supple, feels like a second skinHypoallergenic: silk is naturally resistant to allergens such as dust mites, mould, and fungusEco-friendly: silk is 100% biodegradable