You have a baby at home and top you have the flu, coughing spit ... you have to put a respirator .Ceux there are those hospitals, perfectly suited to this function. Your children will also be able to dress up duck ... not you think about it but it is rainy we. Good quality product, the product is German, a small wire rope allows it to fit any nose, elastics are comfortable ... a value for money on top ... what else?