low price, great protection, read the assembly instruction on the back of package, the 1st thing it tell you to do is remove the blue film from [both] side, after remove the blue films the face mask get very clear view, and it wasn't hard to remove, just use nail to peel off a little piece from the side and start from there. I like it very much, it's not only protect the eyes, it protect the whole face, and I can even wear my eye glasses and Respirator in it, another thing I like is I don't have to take it off and on, all I have to do is push the mask up to have a little brake. wasn't too heavy, the ratchet head band work good to get the right size. Glad I bought this one.