Today I had my first day of full gear winter riding on a clear day. The wind chill got it so that it was 24-27 F. I was very comfortable in my gear with no trouble spots. Now, I wait for the snow and wet times for a full test. Does anybody know what is the formula to calculate wind chill. I mean I know it says 27 F but I want to know what it was for my shell when I was goign 20 mph thanks. Oh yea, another thing I like about cycling winter gear is that I am able to maintain relative the same speeds as when I was in winter. Albeit I am getting stronger. Oh well.