Neoprene Rocks!!!
I'm a recreational cyclist. I cycle to and from work on a regular basis and on weekends when I have time.
Seattle's pretty cold and drizzly in the winter and last year I had a lot of problems keeping my feet warm. No more. After much experimentation and asking I've found the solution.
Smart Wool + Neoprene
I've tried various combinations of smart wool, seal socks, inner booties and outer booties with almost no success. I tried neoprene today in 40 degree temps and my feet were warm!!!