i just got mine and tried them out on the highway. they do a pretty good job. they block most air, but let in enough that you don't sweat or fog up. comfort and ease of use are outstanding. good price and value. i recommend these for anyone looking for biking glasses.
Pros: easy switch from earpiece to strap. very comfortable.
This review was written in the old system and had content requirements that are different than reviews written today.