What portable toilet has biggest seat and bowl?

Here is a review of some porta-pottis that might help..Porta Potti review

They sure have changed over the years..We actually have two on hand now..We use them a lot in the winter months snowmobiling or just getting away when the RV/TC is winterized..Never payed much attention to the seat size but the wife usually picks them out and uses them the most when were out..Us guys go outside like mountain men..lol