The CSG Oxygen Tank is a mini, portable oxygen tank for scuba diving. It’s made of high-quality aluminum alloy, so it can resist high water pressure. The tank is bright yellow, so there’s no chance of losing sight of it. This tank is the perfect solution if you’re on the move and don’t want to lug around a heavy oxygen tank. The mouthpiece has a pressure gauge so you can see how much air is left. Explore this online section for more of these!