Czech Gas Mask Canvas Shoulder BagThese Czech Army bags are what we believe were issued during the 1950's most likely to accommodate M52 gas masks. Made from tough cotton canvas these can really put up with a good deal of abuse. The bag has a fully adjustable shoulder strap (and optional thigh strap) making these a great retro style every day carry option. Internally the bag has 3 partitions originally designed for the mask, filter & lenses perfect for a water bottle, books and lunch!