As expected it is made of 3M. The breath is light, the filter exchange is easy, and the work is easy. Speaking of greed, water droplets coming out of the breath will drip from the exhaust hole, so I want you to solve this point.
Previously, one type of filter was used, but since the area of the filter is quite large on the double, you can easily breathe. I think that it is also a good point to choose the size according to the size of the face.
First of all, it is the lightest and compact among the replacement type dust masks used up to now. The eye is bad and the distance between the face and the weld surface is close to me, the low nose is also attractive. The feeling of use may be close to the most disposable mask in use. The attachment string is divided into the head part and the jaw part so that it can be finely adjusted (However, it is unknown whether this is sold only). The filter is also not bad. Because it will inhale throughout, the intake resistance is also relatively low, and it is not as flexible as it is, it has more than 5 days in your own environment (thin welding 8 hours a day). I think that it is not bad in terms of cost.