Hjc Helmet Ep Atara Matte Glossy BlackFeatures HJC helmets are tested in the laboratory as well as in real life to meet the highest quality standards. HJC is one of the very few helmet companies equipped with its own state of the art wind tunnel laboratory to test aerodynamics, ventilation, noise, and more Coming from MotoGP race helmet design experience, HJC designers and engineers have become experts in aerodynamics and wind ventilated helmets. In order to achieve maximum ventilation, a