I am very pleased with these masks. I use them in the barn, because I react with respiratory problems in hay and straw. Since I do not want to give up my hobby, but I am looking for a viable alternative. The simple masks are useless because anyway a lot of dust under it collects, the thicker masks see out visually, like coming from the future (I am your father .... and so). This model is the required alternative for me. They are easily attachable and adjustable, you get enough air and it keeps the whole particles. The nose snort then proves this clearly. For 10 masks that are used more than once the price is really reasonable. I am very satisfied and recommend it further clear.
