i have a trek vapor 2. maybe 3 but i think 2. and it was 40 dollars and its super lightwieght and looks like because its adjustable it could fit a very large head. lol
also i came with a lifetime garentee and if you fall and hit your head and even if there is no physical damage you can send it in to trek and they will replace it. i had a bad fall on pavement and it got scratched up, so i sent it in and i asked if i could have a blue one instead, and they said sure and just sent me a brand new helmet.