Survival item to make shot down pilots visible at sea. The yellow paint is cracked and worn off at places, but the bag is still supple, no rips.. The bag you're looking at is just the watertight protection bag, inside there a linen bag with about 500 gram of red dye powder. The linen bag has a piece of rope connected at front which is sticking out off the yellow bag at one side. The yellow bag was pulled open and the linen bag was pulled out and it could easily be opened at the back where it was all tied together with a small piece of rope. The dye is very intense and a tiny bit will show a rather big colored spot in the water. Only few of these bags survived the war, ultra rare.. Many empty ones were found the last couple of years, but they were all in bad shape, except for a handful better ones. The 2,3 and more person life boats also had some dye bags among their equipment and also some flagpoles. Same for the flagpoles, ...ss-helmets by the dozen, but finding/buying a proper flagpole is impossible. Jos.