McKesson Sterilization Wrap White / Blue 36 X 36 Inch Dual Layer SMS Polypropylene (1243682_CS) 72/CSSterilization wrap is for ethylene oxide (EO) gas sterilization processes. 100% polypropylene (SMS) construction featuring spunbond polypropylene on the inner and outer layers and a meltblown polypropylene middle layer Protects against both aqueous and airborne contamination Consistently provides an excellent barrier maximizing shelf life and performance Dual layer, two color design features opposing white and blue sides bonded together. Improves ease