There is nothing more frustrating than, kids who are cranky hungry, and all you have on hand is a canned meal, and no can opener. Almost invisible to the design of the more modernized can openers, these military-used can openers, offer you a simple design, that can go anywhere you go. Fitting inside your pocket and using a to-and-fro motion, you can bring a can of tuna or soup on your hike, and eat you lunch in a minute an a half!