Adapts beautifully to the face shape and holds tight. \ R \ nAs long as the filter really holds off dust particles, I can not seriously judge, but the wearing comfort was very high (also compared to \ "cheap masks \").
This product does not get a rating from me because the respirator has been identified as having a significant flaw in the design due to poor quality of the construction. \ R \ nThe plastic retainer on the headband is attached and adjusted for the overhead area has broken off , The material is where the rubber is threaded through much too thin. The article was not usable and was returned by me.