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When you go on a spacewalk and get hungry or thirsty you can get your food or drinkfrom the Filler Upper. I know what you are thinking, you can't eat or drink because you have on a helmet. In the container, there are tiny bits of food and a tube that fits in the little whole you talk through. There is a hook you can carry it with. This will allow you to stay on spacewalks longer and explore more things.
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