Keeps out dust, mist haze, bacteria
High efficiency filtration 
Three-layer protection (25g SS non-woven fabric, 25g melt-sprayed non-woven fabric and 25g Skin-friendly non-woven fabric) 
Made of high-quality non-woven fabric with ultrasonic seamless blanking process, with plastic nose clip and three layers of filtering protection to guard yourself against bacteria and viruses