I have an XL but wish I would have bought the Large instead. The chin straps don't have enough adjustment to take out all the slack, to compensate I have added a little extra padding to the top. Other than that I love it. It's quieter than all the other helmets I've had. It allows less wind in. The adjuster plates weren't set correctly when I bought it, on the way home every time I put my head down to glance at the speed-o my face shield would pop open but I made a little adjustment and it was fine.