Castelli Transparente Jersey
The best gear is the gear that lets you participate in an activity without thinking about anything but your performance. By that criteria, this is one of the best cold weather jerseys out there. I wore this while racing cyclocross and didn't think about it once during the race. Nothing pulled, pinched, or left odd areas exposed. The buttery soft material kept me warm without overheating. Love the fit and the design lines. I'm 5'6" and about 135lbs and got this in a medium.