Whoopsy:
DaveGordon:

Wasn't huge though, and Arais have fairly small shells.  If someone tried a cheap motorbike helmet with a huge shell they might have issues.

Also unclear what your passenger is supposed to do with theirs 

 

What passenger? The spot next to the driver is for luggages Smiley

You carry your luggage?  Have it delivered to your location.  Learned this was from an old friend when traveling internationally on a commercial flight. Send your luggage out to the hotel and they will unpack it for you before you arrive.  That way one can travel as lightly as physically possible.