This Activated Carbon Sport Face Mask helps you breathe clean fresh air in any environment by filtering up to 95% of particles as small as 0.3 microns, including bacteria, viruses, germs, exhaust, dust, chemicals, pollen, smoke, and fumes. Flimsy paper masks that hook behind the ears are typically too loose to really be effective. That's why this lightweight, reusable mask is equipped with an adjustable nose clip, hanging ear design, and adjustable ear straps to effectively seal the area around our mouth and nose. Its dual one-way discharge valves and mesh construction offer excellent permeability and low breathing resistance for total comfort without sacrificing filtration.