X-BionicBONDEAR Cap 4.0

Major heat loss from your body would be your head during the cold weather. Properly covering your head and ears would be the key for fun winter activities.For my 3-4 hour winter cycling, this would be my best investment!! It's very thin yet warm (like tiny puffy padding jacket in high-tech weaving) - plus for wearing helmet since it did not add much extra layer!!Little pricey for winter beanie, but totally worthy!!Happy Safe and Warm Winter Riding!!