Motorcycle Bicycle Cycling Racing Bike Ski Half Face Mask Filter Anti Dust 02 100% Brand new, comfortable and secure fit Military design mask provides excellent filtration against most type of pollution, an urban cyclist is likely to encounter included pollens, dusts, vehicle fumes and bacteria The filter is replaceable, and is designed to be effective at least 3 months in normal daily use Aluminum lock on the nose help easily fit the mask onto different nose shapes Includes two one way valves to allow easier exhalation of heat, water vapour and Carbon Dioxide, suitable for glass wearers Material: Hypo-allergenic neoprene givinga