1. 3D Knitted fabrics –breathable and fast drying 2. 3 Layers - Ideal for protecting you from dust, pollution, allergies . With stretchy adjustable earloops for closely fit, easy to wear and off! 3. Washable and reusable 4. Not fog up glasses - only in really cold weathe 5. Terrific cut on nose mask is wide enough to cover nose,mouth and face, offering an effortless breath.