i purchased this item from . What do these sizing measurements mean? : r/gasmasks

Parcil Safety Full Face Organic Vapor Tactical Gas Mask and

Found a proper sizing chart for the gp-5, gas thought it may be

Polish gas mask SzM-41M grey rubber. SIZE - Large. 1y / Small: 63.5cm - 65.5cm / 24.8 - 25.6. 3y / Large: 68.5cm - 70.5cm / 26.77 - 27.56. Possible

Polish Poland gas mask MP3 MUA Only Mask Genuine respiratory surplus Large size

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