For aircrew on long missions in cramped cockpits the need to answer the call of nature is awkward. A fighter pilot cockpit obviously doesn’t have the room for bathroom facilities, so relief bags are issued to aircrews. These are clear plastic bags into which an airman can urinate, with a pad inside to absorb urine and prevent spills, smells or infections:
The neck of the bag has a piece of flat wire, when the two ends are compressed with one hand, the neck of the bag is opened to allow the bag to be used, when it it released it shuts closed again:
A yellow absorbent pad is inside the bag, with the bags use, NSN number and date printed in black on it:
Their use is explained by this USAAF fighter pilot:
Now, typically in training, our flights are less than an hour and a half. As long as you don’t drink too much coffee before a flight, it’s generally not a problem. However, in combat, I’ve flown missions as long as 8 hours; crossing the Atlantic, I was airborne for over 10 hours. For these missions, I used what we as pilots affectionately call, piddle-packs.
Piddle-packs are the ultimate long road trip solution. They are specially shaped bags with absorbent beads in them. If we have to relieve ourselves, we’ll unzip the flight suit—which is designed to unzip from the top as well as the bottom—unroll the piddle pack, and then pee into it. Once done, we’ll seal the top, while the absorbent beads turn it into a gel that won’t leak during hard maneuvering.