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

*Six color coded diluters for six types concentration: 24%, 28%, 31%, 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