Luke R.wrote a review of Six Six One Recon Helmet on May 1, 2012
I measured my head at 60.5cm, putting me between a L+Xl, but this was sold as a L/XL - I had it all the way tightened and it was too big.
That said, even with a skullcap on underneath it felt huge. Seemed really well made, looked dope and the tighten mech. was sweet, just felt and fit weird for my dome