So I done my homework on all the different helmets out there for skateboarding and knew now that I wanted an S*One. My head size is 23.5 right between Lifer and Mega, so i contacted Customer Service via email, through their knowledge and advice I went with the Mega Lifer Matte Black and so glad I did! Fits perfect right out of the box, snug and sits low on my head. Does not look big on my head either. Perfect color too! Thanks S*One! Your helmets are second to none!