Say "What!?" These are supposed to be wonders of German optical engineering that don't shoot light off into the trees. Why would you need a "glare shade" to keep the light from shining in your eyes? Peter Whites site says that it for when you are out of the saddle but I've never needed any such thing with my lights that supposedly shoot half of my light into the trees. (They don't but that a different topic). My lights are mounted on my handlebars and I'd have to stand on my head to get them to shine into my eyes.