Here's what King Charles III always travels with, and what he said about bringing his own toilet seat on trips with him. For years, reports have circulated that King Charles always travels with his own customized toilet seat. The claim originated from Tom Bower’s 2018 unauthorized biography, Rebel Prince: The Power, Passion and Defiance of Prince Charles. As for those reports that the king travels with his personal toilet seat, Harrold said, “The idea that King Charles travels with his own toilet seat is completely untrue. King Charles also denied the toilet seat allegation when asked about it directly while in Australia.