When your local climate brings the weather, you can respond by bringing the De Marchi Thermal Racing Jersey. It was designed to do four things: provide gimmick free protection from external moisture, insulate and regulate your microclimate, fit like a summer weight racing jersey, and show off your taste with its understated class. Mission accomplished. The jersey owes its functionality to the Roubaix hydrophobic nylon fleece, which is arranged in panels for a racing fit to eliminate extra bulk and keep any untoward wind flapping from cramping your style. The Roubaix material is stretchy and insulating, which isn't a terribly huge selling point in cold weather kit these days, but it's also been given a water resistant treatment, so it sheds rain and cold with equal aplomb. The raglan sleeves are designed to accommodate the cycling position with no discomfort or hanging material, and the wide cuffs grip your wrists without undue restriction. A couple of extra inches at the collar extend the Roubaix's protection to your lower throat while a gripping elastic in the hem maintains coverage and prevents a gap between tights and jersey. The full length front zipper is backed with a corresponding storm flap to make sure there aren't any weak spots for elemental infiltration. Three rear pockets provide the standard complement of cargo capacity, and the clean aesthetics are only interrupted by a script logo on the breast, a small logo between the shoulder blades, and a white stripe running from neck to wrist.