* It would have had to be affixed to a holder inside the helmet, just as in-helmet snack bars are. The snack bar, made of the same stuff as Fruit Roll-Ups, is positioned so that astronauts can simply bend their head down and take a bite. Or, as astronaut Chris Hadfield told me, bend their head and smear it on their face. The fruit bars are mounted alongside the drink tube, which tends to leak a bit, turning the fruit into a “gooey mass.” “We just stopped using them,” Hadfield said.