Let's end this debate right now beatches..Leedom Helmets are the best, better than giro/red/protec. See real world test of strength link below. It is not r&d that sells lids, it is sales and marketing budgets and word of mouth...the giro shattered...
Limit and Scream from Leedom come in XXXL. They are the original old school models and about the safest out there, one of the few shells still out there for melonheads.
i have an NSH, asked for one at SIA and they gave it to me. i can wear my hats underneath not someone's grammas beanie. it is designed by leedom to wear over YOUR stuff and fit snug...sweet lid.