Multi-layer PPE FACE MASK w/breathing valve and adjustable elastic bands. Reusable and machine washable. Interior pocket for carbon replaceable filters (included). **Includes two PM2.5 Carbon Fitters** Activated carbon filters remove most dust, pollen, haze, droplets. This mask is very sturdy and perfect for extra protection. Size: ONE SIZE - Adult/Standard - Our size fits men & women. Adjustable inner wire for tighter seal over nose. These are great if you wear glasses and need more air flow.