I found the Windstopper membram around the ears as acoustically unpleasant: ambient sounds are not only shielded but also alienated and annoying in the long run. Otherwise very good of warm function and processing perspective, but the acoustic characteristics are a strong drawback for me. As the following product with the same heat function and good workmanship is acoustically neutral and therefore much better in my experience: VAUDE Cap Bike Windproof Cap III.