well i purchased it in january online from a helmet dealer on ebay. I used the measuring charts that arai provided and since the weather was shitty i never really got to ride with the helmet on. When i put the helmet on it fits nice and snug but when i ride the wind pushes the helmet up on my head.
depends on how loose your helmet is... like can u turn your head inside the helmet and it sits still or does it stay with your head as u turn?
Ide say if it stays fairly in place when you move around the cheek pads should do good.