I'm enjoying the cardio benefits of riding and the added benefit of relieving stress after a day at the office. I'm not looking forward to the shorter days or colder weather and next month I will leave for work in the dark and get home after dark. I have a 30 mile commute on roads that you want the protection of a steel cage around you so riding to work is not an option. I try to get an hour+ in on Saturday mornings and 20-30 minutes for 1-2 days of riding during the work week. In between riding I use a Bowflex, free weights, and an elliptical for exercise. At this point I don't have any pants that would keep my legs warm in temps less than 45°. I have several pair of Under Armor cold gear that I use for hunting and they wick moisture well. Would these work for keeping warm if worn under my lightweight baggy cycling pants or do I need to spend more money on some type of heavier/warmer cycling specific pants?