Wolfbike Super Anti-Pollution Motorcycle Bicycle Cycling Racing Mask Carbon Cloth Bike Ski Half Face Mask Filter City Style High quality Anti Dust bicycle cycling Face Mask mouth-muffle with filter, 2014 New Release Face Shape Design, Nose portion of an aluminum sheet secured to prevent slipping Suitable for doing activities like biking, riding, snowboarding, or climbing With activated charcoal filter, filters out exhaust emissions Ventilation Holes on Mouth, Soft and comfortable to wear. Material: NEOPRENE, Weight: 50g