DIY.
It is not hard to fashion booties yourself from 0.4 mil builder's plastic. Tough stuff. Some snips here and there, duct or Gorilla tape. Velcro for closer in the back. Oversize a bit for easy on/off. Cut out the sole area as needed for the pedals. Carry some tape for field repairs. Cheap, light, effective, and packs down small.
Last edited by Cyclebum; 08-13-11 at 07:30 PM.