| Re: Helmet sizing? I'm not positive about Shoei, but if they come out they can be replaced. With my Arai that's the case. The 35 means they're 35 mm thick. I think Arai has thicknesses up to 40 mm. How old is the padding? If it's a few years old, replacing it with the same size may work, provided the helmet fit correctly when new. If it needed to be tighter, go with the 40. Just an FYI, on the Arai at least, the padding on the top slso comes in different thicknesses, so you can really customize the fit. |