19 Momme Mulberry Silk Sleep Eyeshade -100% Mulberry silk on both sides, and 100% silk filling not cotton filling. -Natural Mulberry Silk--Our silk eyeshade is made of top quality 19momme natural mulberry silk. It not only feel smooth against your skin but are also hypoallergenic, great for those with sensitive skin. -Elastic Strap--0.4 inches width elastic head strap design. The headband design won't tangle hair like contoured masks, fit for side-sleepers as well. -Lightweight and breathable. You could hardly feel that you are wearing anything when you fall asleep.Blocks out bright sun light completely and guarantees healthy and pleasant sleep. -Easy Care--Hand wash, or machine wash cold in delicate cycle, separately from other items.