Fuller’s earth is a fine clay material that is used to absorb oil, grease and most particularly in a military context chemical warfare agents. The clay absorbs liquids and so is issued to soldiers in small puffer bottles to allow personal decontamination. Individuals are of course not the only things that might need decontamination on the battlefield after a chemical attack, with vehicles and weapons also needing treatment. In the case of these items of equipment, the small puffer bottle of Fuller’s earth would not be sufficient, so larger pouches of the clay are available and today we are looking at a large British Army bag designed to carry this decontaminant:
The contents of this large green bag are easily seen from the white lettering stencilled to the front of the bag:
A large zip is fitted across the back of the pouch to allow its contents to be added or removed:
A pair of fastex clips are attached to the top edge and a strip of Velcro is sewn across the front, presumably to allow the bag to be safely stowed:
I have been unable to determine exactly in what context this bag would have been used, my best guess is that it was for use inside a vehicle to store the clay ready for it to be used to decontaminate the exterior if it were to be hit by a chemical agent. If you do know more about this item, as always please pop it in the comments below!