PORTABLE UVC MASK STERILIZER -Blue,Pink,White Reuse MB filter mask up to 10 times with SOOMLAB's UVC mask sterilizer UVC mask sterilizer is certified by KCL a government appointed testing facility for safety. IT has passed test with successful rate and proved of 99.99% removal of 7 bacteria including Escherichia coli in 3 minutes of sterilization. Easy to use! 3 minutes and your mask is clean Light weight and compact size. 49g only Card slip at th back