Made of 100% Natural mulberry silk that create the ultimate luxury sleep mask. Great for dry eye and dry skin sufferers because silk has been proven to help your skin hold on to moisture that is normally lost over night. Silk fabrics are naturally hypoallergenic as they are resistant to many natural allergens. The lightweight, yet very strong silk fabric creates a delicate feeling mask that is made to last and blocks 100% of ambient light. Low Profile for side and stomach sleepers