Extra Margin Emergency Escape Mask
The Extra Margin Emergency Escape Mask was a portable safety device for both adults and children. It could be put on in seconds, providing immediate protection from hazards usually encountered in a fire. The mask's built-in filter was shown to be effective for up to 20 minutes. This example was made by a Japanese company called Emergency Devices in 1981.
Similar masks in my collection: Korean HK 102, SCape CBRN30