I love the style of this helmet. It has an aggressive look that you typically don't see in a helmet in this price range. Every other helmet I've ever used/ordered has been an XL so that's the size I ordered. As soon as I unboxed it and saw the opening, I knew it would be too small. In fairness, my head was able to squeeze in it, but it was VERY tight and getting it on/off was painful around my ears. I'm going to exchange it for an XXL. A good rule of thumb is probably to order the next size bigger if you go with this one.