AirZ is a reusable mask with an integrated Wind Wheel Module. It’s certified for PFE & ASTM2101 standards and offers full breathability for all your daily activities. It offers 5 hours of run time on a single charge, with controllable 3-speed air flow for a variety of different activities. The ergonomic design also helps stop eyewear from fogging up while using the mask. The 5-layer replaceable filter features a plant fiber filter for waterproofing, an activated carbon filter for anti-odor, two layers of HEPA purification and filtering, and a PP sponge filter that handles up to PM2.5 with up to 99% efficiency. AirZ’s built-in fan can actively bring clean, fresh and cool air to you, and all inhaled air goes through the 5 protective filter layers. This makes it more breathable and more comfortable, increasing air flow and eliminating moisture build up within the mask. Variable air speed is great for all kinds of activities, including exercise, whether you’re indoors or outdoors. The Ergonomic Silicone Pad enables you to wear it for a long time without any discomfort.Note: Before purchasing, please check with local guidelines and recommendations to see if this product is suitable for your intended use.