White Down Alternative Mattress Topper from Downright adds an extra layer of comfort to your bed. It filled with LikeDown, a fiber that mimics the comfort and loft of down. The mattress topper is encased in 300 thread count cotton, and features a baffle construction and a 3" gusset. Fill: LikeDown 100% Cotton Cover Baffled Box Construction Guaranteed Hypoallergenic Made in USA Size Chart Size Weight Twin 39x75 130 oz. Twin XL 39x80 140 oz. Full 54x75 220 oz. Queen 60x80 262 oz. King 78x80 340 oz.