Transform your mattress from ordinary to extraordinary with the European white down mattress pad by royal velvet. The 300 thread count cotton cover offers a breathable, cozy fabric that will last for seasons to come. Filled with a luxurious layer of European white down for comfort and loft and to give you that hotel-like feeling. Our natural fill is washed with Oxipower technology that exceeds the industry standard for cleaning natural fill contents. We wash our material 18 separate times to ensure a complete disinfected and hypoallergenic fill which is responsible down standard certified. A 15-inch stretch skirt to secure the topper to a mattress up to 18 inches thick. Topper is machine washable for easy care. Contains RDS Certified Down: The goal of the Responsible Down Standard is to ensure the waterfowl in the down supply chain are treated humanely.