Antibacterial function 99.8% Deodorization function 97% Antifungal 100% Far infrared emissivity up to 93 Absorption of harmful metals Passed Radon and Thoron Test Passed Harmful Substance and Safety Testing Approved Product (KATRI - Korea) Easy to wash & Sterilize ( In Seconds ) Ergonomic comfortable design Support for increased safety Adjustable ear hoop length Long term Multi-Use Wash and Re-use. Triple structure: Exterior, Coating Fabric, Lining Patented (Dermatological & Decontamination) PRICING Vs QUANTITY ORDERED (Usd $ 25) PLEASE EMAIL AND ENQUIRE RONNIE CHAKRABORTY RATNA INTERNATIONAL SERVICES