Refresh your mattress with this dual chamber mattress topper with a plush 3-inch gusset for loft and comfort. The bottom chamber is filled with nano feathers, in which the feathers run through a process that removes the pesky quills from feathers to provide a poke free, down-like feel. The upper chamber is filled with a layer of polyester to provide an extra layer of comfort. The 233-thread count fabric one the face of the topper offers a soft, breathable feel and the down-proof polyester bottom keeps the nano feathers in place. Includes: twin mattress topper with 39x75 inches with a 3 inch gusset with 18 inch skirt to fit mattresses up to 21 inches. Made from 233 thread count, 100% cotton with a down-proof polyester back. Filled with 10 ounces of polyester in the top chamber and 4.5 lbs of white duck nano feather in the bottom chamber. Spot Clean, Dry Clean Recommended Made in China. Materials are responsible down standard certified and cleansed by oxipower technology. Solid Imported Product Specifications 39x75 Material & Care Polyester Cotton Spot clean only