DEWOOLFSON's mattress "toppers" are filled with a blend of 50% white goose down and 50% small white goose feathers of all-European origin. This topper is lighter, softer, and cozier than our original full-support featherbed (now available in-store only) and can be used under your existing fitted sheet with its protective cover. It also makes a natural, breathable topper over a memory foam mattress. The size shown is the size of the fabric before filling. Constructed in a baffled-box pattern from 100% cotton twill fabric that was engineered in Germany and woven for years of durability and strength. Our protectors are Ukraine-made using downproof all-cotton fabric in a white-on-white jacquard stripe that we have used and trusted for decades. In queen or king size only. Launder your protector as you would your bedding. Spot clean or professionally launder your topper.