Soomlab ULTRA MASK is newest mask introduced and designed by Soomlab It is made with high quality MB filter with high filtration -Long nose wire for support -Softer inner lining for sensitive skin -Better sealing under chin area -Wider and longer ear band for more comfortable wear -Reusable It can be reused up to 10 times with our UVC mask sterilizer Also available in our store It is currently undergoing procedure to be certified on November Design has been improved with wider ear straps and slimmer fitting by covering chin area too. If you are looking for high filtration mask with light weight and easy breathing. Soomlab ULTRA mask is the one