Castelli Pro Thermal Head Thingy, Light Black Apparel

Neck warmer, cap, face mask, balaclava or all four? This tube of warm, fleecy Thermoflex will keep your neck warm, or it has a myriad of other uses in cold weather. Thermoflex fabric provides outstanding stretch, a luxuriously soft and warm feel, ideal for cold weather apparel. The fleecy inside traps a layer of warm air next to your skin while the high stretch allows for an aerodynamic fit.