ture: The one-way outlet is designed to let the warm air flow out from the bottom completelyA nose bridge designed according to the curve of the faceGlasses are not foggy, keeping the internal hygiene of the maskUnique design: designed to fit the face of the nose bridge, breathing more smoothly, breathable and not stuffyIt can be washed and reusedWith adjustable buckle. It is suitable for users with large face shape