Transform your mattress from ordinary to extraordinary with the European down mattress topper. The 233-thread count cotton cover offers a breathable, cozy fabric that will last for seasons to come. The top layer is filled with a luxurious layer of European white down for comfort and a hotel-like feeling while the feather base layer adds loft and support. Our natural fill is washed with ox power technology that exceeds the industry standard for cleaning natural fill contents. We wash our material 18 separate times to ensure a completely disinfected and hypoallergenic fill. A 15-inch stretch skirt to secure the topper to a mattress up to 18 inches thick. The topper is machine washable for easy care.