Particle-filtering preformed mask with Exhalation valve Metal-free processing Seamless headband for a comfortable, secure fit Exhalation valve to further reduce breathing resistance, by helping to minimise moisture build up inside the mask
Particle-filtering preformed mask with Exhalation valve Metal-free processing Seamless headband for a comfortable, secure fit Exhalation valve to further reduce breathing resistance, by helping to minimise moisture build up inside the mask