What’s the difference between these two helmets aside from the removable visor on the latter? I was gonna buy Giro Foray but there’s no size available for me. I looked for another road bike helmet and liked the Bell Formula. But again, no size available. I kept looking at Bell helmets and saw this Drifter. It looks exactly like the Formula, except that it has a removable visor. Same number of vents. The Drifter is a bit heavier by about 15-20 grams, probably coz of the visor. It has the size i’m looking for.