Pure Care Air Purifying Mask - White - Used once, new Key Features of the Mask Advanced Filters: Contains (H13 HEPA) filters matching those used in home air purifiers. Easier Breathing: Equipped with sensors that measure breathing rhythm and battery-powered fans to facilitate air intake. Self-Sterilization: Some versions come with a charging case featuring (UVnano) technology to sterilize the mask from bacteria. Comfortable Materials: Made of medical-grade silicone to fit the face and prevent air leakage. Facilitates breathing during running or sports with fans and sterilizes the air with filters. All its accessories are available as shown in the pictures. Price: 800