MSR 22-Ounce Fuel Bottle (Red) Air-tight seal allows fuel to be stored longer by preventing air from entering and degrading fuel Made from single-piece, impact-extruded aluminum to prevent leaks and cracks. Bolstered shoulder and base to resist bulging when pressurized. Controlled Pouring: Holes in shaft of bottle cap allow measured flow, prevent spills. Pump Storage: MSR Fuel Pump can be stored inside a depressurized bottle for easy transporting.