What did Queen Elizabeth, as well as Prince William and King Charles II always travel with? It may surprise you.
And no, it's not a full mourning suit!
Queen Elizabeth II was one of the most well-traveled heads of state in the world, having traveled constantly since she became queen in 1952. But did you know that she always traveled with a bag of her own blood? And so too do Prince Charles and Prince William?
Speaking to Yahoo's The Royal Box, royal expert Duncan Larcombe said: "If it’s the Queen on tour, the royal physician is with them with a bag full of their own blood."
"Just in case something happens."