That's why these astronauts carry their backpack. This is a 17" tall backpack with multiple storage compartments on it! What a big mistake that'd be! Don't you agree?.That way they can have all of their goodies right there with them where they couldn't possibly forget them! FUN DETAILS This astronaut backpack is an essential part of any astronaut costume! Astronaut Backpack For Children | Costume Accessories It's so they can carry all of their stuff and not forget anything when they head out on their mission into space! The answer is simple.