The best on the market worldwide. Is made from gas free plastics and has a PAR Plus coating on the inside. It is light weight steel so you put it up yourself. i have done a bit of research on them and they are the best in the world. By far. They have all the right holes in the right places and seals up nice and tight. Ideal for CO2 injection. The image is of the large tent but you get the idea just half the size.