Anti-fog-ViroMasks Shield comes with a sturdy aluminum lasso clip to ensure a good seal. This ensures that "fog on the glasses" does not occur. Daily or sports-ViroMasks Shield is designed to be very comfortable. Very fit and easy to breathe; don't worry, you can keep it all day long. You can even use it during exercise. High quality-ViroMasks are made of the highest quality materials. Whether it is fabric quality, design, ear hooks or lasso clips. Everything has been carefully designed, keeping in mind protection and comfort. Sustainability-ViroMasks Shield can be reused and cleaned. Use ViroMasks to protect the environment.