The Assos Winter Cap is a good example of a low-volume winter cap that fits under your helmet and keeps you warm in a variety of temperatures. It's design and construction are typically Assos, meaning well thought out and executed. Double-knit layers of breathable insulation protect your forehead and ears against the sting of winter rides. An improved fit better accommodates long hair, while all-around breathability protects against overheating and the accumulation of internal moisture. The circular seamless material breathes exceptionally well via the double layer construction, but holds heat within for optimal comfort even on hard cold weather training rides. The crown shape offers a better fit for more head sizes and hair volumes. The double layer construction with elastane across the forehead and ears adds proper insulation to these susceptible areas.