Respiratory half mask with std. thread, Polimask ALFA, EPDM, four-point strapRespiratory half mask with std. thread, Polimask ALFA, EPDM, four point strap Material: EPDM. Acc. to EN 140. Well sealed, anatomically shaped mask body made from skin friendly, soft EPDM with standard thread connection according to DIN EN 148 1. Good adaptation to facial contours for an exceptionally tight fit Exhaled air routed to prevent glasses fogging Optimum weight distribution thanks to the four point strap Comfortable due to low weight