DescriptionThis is a set of 3 pieces cycling mask.Ergonomic layout-Curved design can well match human face comstruction.Made of activated carbon and very breathabe fiber, for long hours' wearing.Two ventilation holes built in both sides for better breathability, which ensures you nice usage effect.Feature- Color: Gray. - Material: Non-woven fabrics. - Size: 14x10x0.25cm. - Ergonomic layout-Curved design can well match human face comstruction. - Made of activated carbon and very breathabe fiber, for long hours' wearing. - Two ventilation holes built in both sides for better breathability, which ensures you nice usage effect. - Windproof, anti-dust anti-fog & anti-pollution, besides, it can also help eliminate mouth odor.