DEFEND Sterilization Wrap (CSR) is perfect for general purpose sterilization, as it provides a barrier against air and water-borne bacteria. This CSR wrap conforms easily around various shapes and sizes of cassettes, allowing excellent penetration of various methods of sterilization. Features include: Compatible with steam, ETO and gamma Petroleum and memory-free material with cloth-like feel Multiple sizes available 500/box: 30x30, 24x24, 20x20 1, 000/box: 15x15 and 12x12