Here I can only assess the fit. The is very good and the adjustment on the wheel is perfect. After having set all the belts, sat the helmet without pressing somewhere. He is firmly seated, even when driving. If you increase the range of adjustment to the wheel, you can even wear a cap underneath. Except on the wheel, you need nothing else to adjust. How stable is the helmet, I can not say because I have not yet overthrown it. Priced at 10 you can not complain really. Other helmets have the same inner life (Print Styrofoam or similar) and costs five times.
