When you need lightweight warmth and performance for serious training ride in the shoulder seasons, Castelli has what you need. If cool and cold weather riding is a part of your daily life, chances are you prefer flexibility with your accessories where feasible. Why? Temperature and precipitation changes are a regular feature of off-season training. When you can't plan and pack for every possible situation, the Pro Thermal Thermo Head Thingy from Castelli is an ideal , elegant solution, despite the silly name. Essentially a stretchy thermal fabric tube, it can be worn as a neck warmer, hat, or bandanna-like thingy.

Made from Castelli's proven Thermoflex fabric, the Pro Thermal is light, with an excellent warmth to weight ratio, considerable stretch, and a soft, very low profile brushed fleece inner that feels comfortable on the skin, and also serves to trap body heat. At the same time, the fabric has a finished outside surface that while breathing out moisture and allowing for limited air exchange. It is not a true wind blocker, but does limit inflow and help you maintain the proper balance of heat and breathability.