Excellent shape design with extra large filter area, much lower resistance &more comfortable to wear. With advanced material,inhalation resistance 50% better than EN149 regulation requirement. Head wearing type polyester earloop offers long time wearing comfort without ear pain. Equipped with avisualized patented exhalation valve with big venting area,helps hot air quick out. Adjustable aluminum nose clip,ensure fit with the bridge of the nose. With special supporting material,avoid regular folding masks’ collapse problem,help keep the comfortable distance between nose and mask. Configuring PU nose pads with better fit and offers more comfort.