I bought a Third Eye eyeglass mirror and hated it. Even the small diameter plug on my Mirrycle won't fit into the Truvativ bars on my Raleigh Coupe Tandem. For awhile I used the velcro attached Blackburn mirrors for mountain bikes but I upgraded to Ergon grips. Enter the helmet mirror from Efficient Velo Tools (www.biketoolmaker.com) one look and I knew I could get used to this mirror. It has got to be 2" in diameter at least. You'd think it would cramp your forward view but it really doesn't. I am horrified whenever I point someone to these mirrors and they come back and tell me what they cost now. I didn't pay anywhere near that. If you live near a Bike Gallery I believe you can get them for less. BTW I did not use the supplied zip ties but went to a hobby shop and got some stick on velcro for the helmet and mirror. Very secure and it allowed me to put the mirror in a much better location on the helmet down where the helmet ribs would have been too thick for even longer zip ties.

H