1. Adjust wind noise: Our ear warmer bicycle helmet accessory is designed to reduce wind noise while riding, enhancing your experience so you can focus on the journey without distraction from loud noise. 2. Developed for riders: These bicycle earmuffs are specially crafted for cyclists, making them ideal for speed e-bikes and electric bikes. The earmuffs provide an extra layer of comfort by keeping your ears warm and minimizing wind noise. 3. For autumn and winter: With our windproof earmuffs, you can brave the elements. They protect your ears from chilly winter winds, ensuring a comfortable and enjoyable ride. 4. Compatible with all helmets: A key advantage of these earmuffs is their versatility. They fit all helmet models and can be easily attached to any bicycle helmet.