SILX Silk Filled Mattress Topper, Queen 100% Cotton (Shell), 100% Silk Filling Imported Mulberry silk-filled mattress topper with 260 thread count cotton cover Silk is 100-percent natural and hypoallergenic; contains 18 essential amino acids beneficial to skin, hair and join pain Due to its temperate nature, silk-filled bedding is perfect year-round For everyday freshness, silk-filled bedding can be aired outside for a few minutes in indirect sunlight Dry clean only