Natures true down alternative, wool is the ideal choice for healthy bedding. 233 thread count 100-percent cotton cover with diamond quilting. The outer chamber is filled with 3 oz per square yard of natural wool and the inner chamber is filled with polyester fiber fill. Comes in a jumbo standard that is 20x28 inches and has 18 oz of fill and a king that is 20x36 inches and filled with 23 oz of fill. Wool wicks away moister a a much greater rate than cotton and down. Wool is hypoallergenic.