Do not buy from them. It is a PRC company posing as an Austrian (not Australian) company. Their mask envelope discloses the following: "direct contact between mouth and nose will be detrimental to health?." Products are made in PRC. Seriously. I tried to return these as soon as I ordered them in mid-July. The stone-walled me from the very beginning. They are still sending me form emails, saying that I have to return them to Austria at my expense, eventhough they were shipped from a warehouse in Delaware. This is a scam. I've stopped the charge at my bank. And going to call the DE Attorney General's office to report them.