This is my work in progress design for an oxygen tank holder. The idea is that a small portable tank can be put inside this compartment and attached to your belt or belt loops. This would make it more convenient for people than lugging around different contraptions to hold the tank. I created my design to hold on average about a 6 lb oxygen tank. The holder is cylindrical for the tank and then there is a flat piece on the back to make it more comfortable for the leg. The two “hooks” are very work in progress still but they would be used to attach the tank to a belt loop.