LEVEL 1, LEVEL 2, LEVEL 3, LEVEL 4, Full coverage AAMI LEVEL 1, LEVEL 2, LEVEL 3, LEVEL 4, Material : PP 30 GSM +PE 15 GSM = 45 GSM Waterproof Secure neck ties and full coverage . Sterilized method: microwave system. Packaging : 1pcs/ vacunm; bag 30 cm x 30 cm , 10 bag , 120 pcs / case ; 200 pcs/case