NEW Ferno by Spiracle Technology M25A-001 FERNO2 Oxygen Gas Cylinder
Fully wrapped, carbon-fiber reinforced, aluminum-lined vessels manufactured with the highest-grade aerospace materials. Both products carry DOT regulatory certifications for design and qualification certifications. 
The significant reduction in weight and greater capacity of these carbon-fiber vessels means you can carry more oxygen to remote locations, onboard helicopters, up flights of stairs, and in your ambulance.
Much lighter than pure aluminum tanks, stronger so you can take more O2 with less weight.