Fort Hamilton Backpack Navy. This is definitely not your traditional backpack! The Fort Hamilton Backpack is truly a hikerâs best friend. No matter what you are doing, or where you are going, this bag really shows off its survival kit skills. Whether you need to carry a sleeping bag, water bottle, flashlights or more, The Fort Hamilton is the backpack for you. Hey, you never know what mountain you may come acrossâ¦