Casco Earmuffs Duell, Duell one and Mistrall 2Looking for snug ears during your rides? We've got you covered with the Casco Earmuffs for Duell, Duell One, and Mistrall 2 helmets. These earmuffs are perfect for keeping your ears warm without compromising on comfort or style. Excellent Comfort and Fit Made from soft, high quality materials, these earmuffs sit comfortably on your ears. They fit seamlessly with your Casco helmet, ensuring you stay cosy on chilly rides. Easy to Attach No faffing