I have trouble getting helmets big enough for my giant head, so I'm weary of mailordering a helmet just to find out that it's too small. I talked to Linda Hardesty at Bonehead, she offered alternatives and a guarantee of return if it didn't fit even after baking it. Well I received my helmet in three days, a day earlier than she promised, it fit great and is just as comfortable as she said it would be. I recommend dealing with her directly for anyone that isn't sure what size or type of helmet they need.