We prefer when gear fits just right. That's why we've ditched our boxy survival kits for this slim, tubed version. The extruded aluminum cylinder measures eight inches by two inches and houses six small canisters, each one designed to cover a survival situation, from firestarting to water purification to first-aid and more. One endcap features an LED flashlight while the other features a liquid compass. The company also offers first-aid, shelter kits and a flask.