You buy set of  gas mask GP-5 with filter and bag in gray

The GP-5 Gas Mask is a Soviet-made single filter gas mask. It was issued to the Soviet population starting in 1970; production ended in 1989. It is a lightweight mask, weighing 1.09 kg (2.42 lbs). It can operate in all weather and withstand temperatures from -40 degrees (Celsius & Fahrenheit) to 114 Celsius (174 Fahrenheit). The GP-5 also comes with sealed glass eye pieces. They were originally made to protect the wearer from radioactive fallout during the Cold War and were distributed to most fallout shelters. They have recently been tested in Poland to see if they have NBC protective capabilities. It was concluded that the mask will last in a NBC situation for 24 hours. They are a favorite of gas mask collectors because they are common and have the "old" circular eyepieces like masks used in WWII and the "helmet" type masks.

There has been some debate as to whether or not the filters for these masks contain asbestos they do not contain asbestos but they do contain activated charcoal, which might be inhaled by the wearer if the cotton seals inside the filter are damaged.

A variation of the GP-5 gas mask is the GP-6, which features a circular piece of metal on the front, which acts as a voice diaphragm, as well as the not so clever design of having ear holes, which compromised the seal of the mask. Furthermore, the GP-5 mask is known to tightly cling to the skin of your head, making it only wearable by short-haired persons.   (Info from Wikipedia)