The ShR-2 (Russian:Шлема Раненого - "wounded helmet") mask is a Soviet gas mask designed and produced in the 1970's for soldiers with head wounds. It was most likely issued to medics and field hospitals.
The mask is 15 inches (38.1 centimetres) in diameter and is made of thin grey rubber. It has a metal clasp at the neck portion of the mask to tighten it and ensure an airtight seal. It also features three cloth straps on each side that tie together in order to fold up excess rubber, depending on the size of the bandage. The mask's eyepieces are very large and are crimped to the rubber with a metal band like most Soviet masks. The exhale valve for this mask is located on the wearer's right side. The filter is connected to the mask via a built-in breathing tube that protrudes from the front of the mask. The breathing tube is compatible with all 40mm soviet filters.
Unfortunately the ShR-2 tended to fog up very quickly due to the fact that it did not incorporate tissot tubes into the design; therefore condensation forms faster on the glass lenses. This problem can be fixed by taking two GP style anti-fog inserts and cutting them to fit the masks eyepieces, reducing fogging greatly.