These scuba tanks have a steel core as a basis, then wrapped w/ multiple layers of carbon fiber for structural integrity and dimensional stability, whilst keeping the weight of the tank down which, when filled up to 300 BAR of pressure, will be very easy to carry with one arm. It is also possible to carry this tank inside a backpack when, for example, going out hunting alone.

 Filling station sold separately

Note that Cylinders must be sent for testing once a year. Cylinder may not be filled if it is out of date.