Don't be me. I bought 2 shoei lids at a dealer closeout sale. They fit great for 45 seconds. After that, (when I got them home) I thought my head was going to explode after 5 minutes.@Evoex my helmets fit great, I was just wondering how to determine head shape...thanks for the link, I'll check it out...
I found out (the hard way) I've got a long oval.
The two arai's at the top of FMJ's pic - signet q and profile..... I have 1 of each ftw.