One size fits all and seems to be very comfortable. The neck portion could be longer but coupled with my Schampa neck gator I believe this will not be an issue.
Shoei RJ Platinum-R Helmet Lightweight, Advanced Integrated Matrix Plus (AIM+) shell Adjustable top intake and rear exhaust vents A 2 layer liner allows for smooth passage of air, improving cooling performance Shoei's distinctive OpenRoad visor Soft and comfortable 3D liner Removable/washable interior Communication system compatible Padded chin strap Standards DOT218, Snell M2010 Construction Advanced Integrated Matrix Plus (AIM+) Shell Weight 2.86 lbs/1300 grams (approx, based on Size Medium Solid Color) Packaging Individually wrapped, bagged and boxed Note Due to manufacturer restrictions, Shoei products can only be shipped to addresses within the United States
I wanted a 3/4 helmet for the increased side vision. I have owned Shoei in the past and knew that I really could not go wrong. I chose to order online after hearing and reading about Revzilla's awesome no hassle refund/exchange program. Fortunately I did not need to return or exchange.
Great helmet for those who want to retain their wide angle of vision and don't mind a slightly heavier helmet (not really that heavy but there are lighter helmets out there).