Midwest Can containers are designed to be environmentally friendly and to meet or exceed the California Air Resources Board CARB and EPA requirements for portable fuel containers. All fuel containers include an exclusive FlameShield Safety System that provides consumers with a ...Midwest Can containers are designed to be environmentally friendly and to meet or exceed the California Air Resources Board CARB and EPA requirements for portable fuel containers. All fuel containers include an exclusive FlameShield Safety System that provides consumers with a double layer of protection from accidental fires that can result when improperly handling and storing flammable liquids.