On other days it can be more of a challenge—especially if there’s cold weather in the forecast. When winter threatens to keep you off your bike, zip up in our Men’s Prime Alpha Jacket for the extra warmth you need to hit the road. Ideal for layering over a base layer and under a rain shell, this cycling jacket keeps you comfortable from start to finish thanks to lightweight Polartec® Alpha® insulation and breathable, moisture-wicking exterior fabric.