I dislike canned stuff because of this also. Still carry canned goods but look for alternatives. I did see where folks would use the can opener to open the other end of the can also, crush the can flat, and then sliding the two circular end caps into the flattened can. Kinda a PITA but would save a lot of room.The only problem I have with canned soup is the empty cans take up quite a bit of space to pack out in your garbage sack. One alternative I've found though is in the health food isle there are some soups that come in a cardboard carton.