Originally Posted by
merlinextraligh
But it's definitely less than 100%, which makes me think that some riders or teams have concluded that it's more aero to go without, or issues of comfort, heating, vision, fogging, outweigh whatever small aero advantage there may be.
It would be interesting to see if the riders that are not using visors also happen to have contracts with sunglasses manufactures, like Lance. But I'm way to lazy to do that.