The SGODDE Mini Scuba Tank features a high-quality cylinder that’s 4.1mm thick and consists of four different layers – an antioxidant coating, aviation aluminum, a protective layer and antioxidant paint (in an awesome shade of neon green). The mouthpiece, meanwhile, has a pressure relief valve, an inflatable interface, a stainless steel pressure gauge and inner core, and a silicone inspiratory mouth. The tank has a capacity of 500ml. Its small size makes it a great option for travelling. So if you’re planning on scuba diving abroad, this is the practical tank for you.