McKesson Sterilization Wrap Dual Layer SMS Polypropylene McKesson dual-layer sterilization wrap is designed for ethylene oxide (EO) gas sterilization processes in clinical settings. This disposable wrap provides a protective barrier for surgical instruments and medical devices during sterilization and storage. Product Specifications Dual-layer construction with opposing white and blue sides for easy tray assessment 100% polypropylene SMS (spunbond-meltblown-spunbond) material Grade 400 material for consistent barrier performance 24 x 24 inch dimensions for standard tray coverage Protects against both aqueous and airborne contamination Available in multiple pack size options This single-use sterilization wrap features a three-layer SMS construction with spunbond polypropylene on the inner and outer layers and a meltblown polypropylene middle layer, designed to maximize shelf-life and performance of sterilized items.