First I put on my Columbia Kazoo hat (with earflaps apart):
Then I put on my smiths over the hat:
Then over thoase I put on my Brown XL Giro S4 helmet (I know...bad pic):
And it all fits nice and snug. And for those of you who think its unsafe to wear stuff under the helmet i disagree because many times have I fallen and this helmet has protected my head amazingly.