Mountain House Pouches. Pack light. Eat right. With our easy-to-prepare stand up, zipper pouch, it's never been easier to make a great tasting meal! Simply open, pour in boiling water, and zip. Then eat right out of the pouch. Our pouches have a shelf life of at least 10 years from the date of manufacture as long as the pouch is stored unopened in a cool area.* Ice cream products and Organic Fruit Snacks have a 2-year shelf life.