Peeing into a tube doesn't work for everyone for some obvious physical reasons, so today's fighter pilots urinate into “piddle packs, plastic packs that convert urine into a gel for disposal, but the method involves partially undressing while sitting strapped in a tiny cockpit and flying a multimillion-dollar jet.

In 2026, fighter pilots typically do not use indwelling catheters, as these pose a high risk of infection and discomfort during high-G maneuvers. Instead, they utilize sophisticated "In-Flight Relief Systems" (IFRS). The most modern standard is the Skydrate system, which features a wearable, hands-free interface—a silicone cup for men or a specialized pad for women—connected to a motorized pump. When the pilot relieves themselves, sensors detect the liquid and automatically pump it into a collection bag stored in the flight suit. This replaced the older "piddle packs" (absorbent gel bags), which required pilots to unstrap and manually navigate their gear while flying. These automated systems are vital for long-range missions and multiple aerial refuelings, ensuring pilots remain hydrated without the cognitive distraction or physical risk of traditional bladder management methods.