We really like t his mask. Quality construction and it looks brand new, not used. The filer canister is totally sealed. The mask even came with a carry bag even though the item description did not state it. I would recommend the mask. I've not used it or tried it out yet but the quality and construction is great.
easily one of my most comfortable (and creepy) gas mask I have.
Though I still havent figured out how to open the casing/container that contains the filter.