A 100% microfiber mattress pad of hotel grade is incredibly comfy and breathable. A thick filling gives your foam mattress or mattress more suppleness. Since the cover is not waterproof, please keep spills away from it. This fitted mattress topper's incredibly elastic skirt protects and holds the mattress in place at all times, making it ideal for thick mattresses up to 12" (30 cm). No more concerns about moving or slipping. An Ideal Choice: This mattress pad is a wonderful choice if you're considering a comfy, breathable and soft mattress pad. Comfortable and Soft: The fiberfill-filled, very soft quilt offers increased loft for more comfortable sleeping and protection.