Double-sided velcro. This stuff is awesome and replaces bungees and straps for me. I have pieces in various lengths for using to keep my rain pants out of my chain, holding a little radio to the frame, and tying up anything that needs to be tied up. No worries about whether you have a strap that's long enough, because you can just velcro the sections together to get a longer strap in case you need to strap something bigger on your rack. Super lightweight, just keep the prickly side away from the lycra.

http://www.campmor.com/webapp/wcs/st...roductId=12110