Half-face protective mask with two filters Climax 756 (With A1 filters). It covers the nose and mouth and is made of durable and lightweight materials that are not harmful to health. The mask body is made of thermoplastic rubber.  Both the material and the design allow for a snug fit on the face, preventing air from entering the mask from the contact points with the face.  The mask has three holes. In the first one, located in the center of the mask, the ventilation valve adapter is placed, while in the two holes located on the sides, the air intake valves are adjusted.