New, never used. CSC edition, size small. Dave Zabriskie used one of these to beat Lance Armstrong in a prologue time trial. I'm pretty sure if you used it, you'd beat Lance Armstrong too.

http://im.edirectory.co.uk/p/3521/i/cb200754748.jpg

http://www.zipp.com/portals/0/ZabriskieZipp%20casey%20gibson.jpg