Performance Triflex BIB Tights
http://www.performancebike.com/shop/...tegory_ID=1121
Best thing I bought for riding.
I have dropped a ton of weight since riding and commuting 100% since June 22, 2006
These tights will keep you warm and yet not too warm on the warmer days.
I have worn these in temps down to 5-8 Degrees F.
When the temps drop future I put on a pair of Under Armour ColdGear Leggings under the Trifle Tights, then you are go to go way below 0 (F).
Remember: Ear, Hands, Feet... Keep them warm and you can take about any cold.
Good Luck