I have the Castelli Expresso Due. It works very well. I have some Pearl I zumi Am Fib tights. This combo has kept me comfortable at 17°F, probably lower, as I was very comfortable at that temp. I would like to see what the companion jacket to the tights look like. These are the warmest tights I have ever owned. Are the roads in the Midwest icy in the wintwr? Biggest problem In the PNW is the roads get real icy at when it is cold.