Chamber pots in ancient Rome were not designed for both sexes equally. Both men and women had their own versions: the female sex was using scaphium when gentlemen matella. The larger chamber pots on the streets were for men whose urine was then collected and sold. Urine was used by fullones for cleaning fabrics.
In the photo Roman chamber pot found in Pompeii. It is worth noting that objects had special “collars” that allowed you to sit while urinating.