Check the listing for details. Reusable Mask-(2) pm 2.5 Dust Filter Valves-Washable-Ear Saving Adjustable Strap. Color: Black, Condition: New. Suitable for Cycling. Listed at 12.99 USD. · PROFESSIONAL GRADE - Five layer activatedcharcoal filters (filtering effect ≥ 95%) offer protection against droplets,smog, dust, pollen and more! · STERILIZATION MADE EASY - Replaceable filters plus high quality elastic fabric makes mask cleaning quick and convenient(Breathing Valves can be cleaned with alcohol wipes once the filter is removed).· BREATHE SAFE - Breathing valves make therespiratory process much safer and more comfortable than with traditional facemasks.· DESIGNED FOR COMFORT - Ear Saving Adjustable VelcroStrap and Nose Clip grants the user not only significantly more comfort aroundthe ears but also a more secure fit.· MADE FOR EVERYONE - This product is very good foranyone to use in activities like shopping, cycling, running, hiking, fitnesstraining, landscaping, woodworking, skiing, cleaning, and much more!