My CL-15 , after 6 yrs, had finally lost its good fit feeling. And dropping it down some concrete steps didin't do it much good either. So I got a CL-16 for my troubles. It is 2 weeks old as of this post, has all the attributes that TQ explained, and the fit, an XXXL is perfect for my melon.
Verdict, and very nice helmet, with excellent specsnd ab even better fit.
Ride safe all,
Greg