*Specification: made from non-toxic medical class soft vinyl material, adjustable nose clip, elastic belt, green colour or transparent
                           are all available

*Two color coded diluters for seven types concentration (low concentration: 24%, 26%, 28%, 30%, medium concentration: 35%, 40%, 50%)

*Including humidity cup and complete 2m oxygen supply tubing

*Available size: XL (adult), L(adult), M (child), S (pediatric)

*Packing: individual poly bag

*EO sterilized，or no sterilized are all available