I bought this nice Rudy Project Syton SuperComp aerohelmet off another slowtwitcher not long ago. I is a size large 58-61cm weighing 465 grams. I wear a 7 1/8" hat and this helmet fit me fine. It is in very good used shape. The clear visor has no scratches, nicks or cracks. The helmet is clean with no damage. I wore it on a few training rides and liked it but I am getting out of the full aero stuff for a bit to give trail riding on a 29er a try. I am still using my roadie for triathlons and road riding of course. Looking for $50 shipped in the lower 48 states paid through Paypal. I will ship the same or next business day that payment is received. For those that do not know the visor and jaw pieces are easily removed for more air flow.