Material: standard crepe paper Features: waterproof , no chips , strong bacteria resistance , meet ISO11607 and EN868 standard . Usage scope: for draping in cart , operating room and aseptic area . Sterilization method : high temperature ,High pressure , plasma .STEAM: 134℃ ， 10 minutes ; 121℃， 20 minutes. ETO : 54℃， 90 minutes . 100% virgin wood pulp 45g/60g medical grade paper 60* 60 (500pcs/ctn)