Make your mattress plush and comfortable with the Lucid 3 in. Hypoallergenic High Plush Down Alternative Fiber Bed Topper. Baffle box construction ensures the hypoallergenic down alternative fill lofts naturally without shifting. Its cover is made of soft, cotton percale and secures to each corner with elastic straps. For convenience, this bed topper may be machine washed and dried. Choose from available sizes. This mattress topper is shipped compressed and in a box to reduce your shipping fees and offer an easy way to get it through your door.