More or Less

While each glove finger, anklet, or undergarment was assigned a tracking serial number, it was also given a range of sizes-- from small and medium to large-- within which its astronaut-specific dimensions could be designated.  Once agreed upon, the only problem came with sizing the most intimate part of the suit assembly, the urinary collection device (UCD) the slid over the astronaut's penis.  After an "incident" with the first astronaut fitted for the device, the UCD's designations were changed from "Small, Medium, Large," to "Large," "Extra Large," and "Extra-Extra Large.  

-- from Spacesuit: Fashioning Apollo by Nicholas de Monchaux