Check the listing for details. Russian gas mask size m or 2. Condition: New. Listed at 55.00 USD. Gas mask size 2 or M New Russian with filter and carrying bag. CBR (chemical, biological, radiation) protection. Protects whole head giving good seal. The gas masks are designed to protect from nuclear, biological and chemical (NBC) agents. These protective masks are intended to protect the respiratory organs, face and eyes from the effects of toxic agents, radioactive dust and bacteriological aerosols. Normal 0 false false false EN-US X-NONE X-NONE These are Israeli filters. The price on the filters have tripled, and old Russian filters use asbestos that might give you cancer. You need to use a mask that fits otherwise bad things can enter the mask so better to get a mask that is tighter then looser. Purchase a Russian Gas Mask for sale with standard 40mm filter. The air passages in this Russian Gas mask prevent foggy lenses for better visibility when chemicals are unleashed into the air. Unlike masks with adjustable straps, this Russian Gas Mask covers the entire head and its elasticity accommodates numerous sizes.· Screw-on filter · Sealed Plexiglas eyepieces Size chart Mask Size Head Size Cm In 2 66-68 cm 26−26.8 When ready to use, screw filter into mask, put mask on then pull the protective tab off the bottom of the filter. To make sure you have a good seal, put your hand over the opening of the mask where the filter screws in and breath in. If the mask sucks onto your face, the seal is good.