Maximum Absorbency Garment
A Maximum Absorbency Garment (MAG) is an adult-sized diaper with extra absorption material that NASA astronauts wear during liftoff, landing, and extra-vehicular activity (EVA) to absorb urine and feces. It is worn by both male and female astronauts.
Source: Wikipedia — Maximum Absorbency Garment (CC BY-SA 4.0)