In addition to the other comments. I would add if you were seriously injured in a crash, and it came down to a defective helmet, you would feel a lot better if that helmet came from a reputable manufacturer with a decent company that can handle these types of things. Something tells me if you crash with a knockoff helmet from China and something malfunctions, good luck a) getting a hold of them and b) getting them to stand by their product and do the right thing.