Two lateral filters providing lower breathing resistance. Easy maintenance. The headband and neck band offering optimal adjustment and good stability. Main body of the half mask: The main body of the half mask is made from soft natural rubber. The design and the material used allow it to adjust to the face in an airtight manner, preventing air from leaking into the interior through the face/mask join. The main body houses the two filter connectors and the exhaling valve. Exhaling valves: The half mask is fitted with an exhaling valve made up of a valve-holder and a membrane, which makes it easier for exhaled air to escape. Fastening harness: It has a comfortable neck strap and head strap that can be easily adjusted to the right length.