The Moldex air plus respirator FFP3RD gives reliable protection against particles. It has a larger filter surface for low breathing resistance. It has ventex valve which means it starts to open even at low exhalation pressure and significantly reduces heat and moisture inside the mask. It is reusable and is comfortable and durable throughout the shift. ActivForm - automatically fits to the face Strong and durable structure Nose seal 100 % pvc free Masks has passed Dolomite clogging test