Affordable, comfortable, easy to put on/take off, and it makes it *impossible* for people to understand what you're saying. If you're working in an environment where you don't need to talk much (mostly solo work), or you can safely loosen the mask for communication this is a fantastic value. But if those don't apply look for a different mask cause this muffles the crap out of your voice. It's like yelling through a pipe filled with socks.