http://www.roadbikeuk.com/blog/reviews/2009/01/02/1230913740000.html This fairly basic offering form Bontrager offer slick tread for minimum rolling resistance and a Kevlar belt for puncture prevention. They come in between 225g and 450g. We have had these on long term test over the winter miles and with winter riding ... en Team Road Bike UK Fri, 02 Jan 2009 16:29:00 GMT Pebble (http://pebble.sourceforge.net) http://backend.userland.com/rss