I use Mutant Guppies on my helmet.
White with red side-lights on the front, red with yellow side-lights on the back. They are tiny little lights, with thin elastic cord loops. Much easier to maneuver around the vents of my Bell Citi than Knogs.
The light itself is about the size of the end of my thumb.
http://forums.teamestrogen.com/showthread.php?t=20575 The link in this review from 2 years ago is old, here's a current link to the Serfas site: http://www.serfas.com/product_details.asp?ID=290 and for the tail-light: http://www.serfas.com/product_details.asp?ID=304
They pop off the helmet immediately, as I learned when I wolloped my helmet into the door frame of my car. And they are BRIGHT. Riding home one night I kept seeing very bright red and white reflections off street signs and I thought "where's the ambulance?"... it wasn't an ambulance in the neighborhood, it was ME!
Last edited by KnottedYet; 11-22-2009 at 06:24 AM.
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson