div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: PowerPoint Presentation · Our ASTM level 3 face masks are constructed of four layers for protection comfort and breathability Layer 4— soft non-abrasive inner layer makes the src=https:reader034fdocumentsusreader034viewer2022051918600ace64b82983772323a855html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: PowerPoint Presentation · Our ASTM level 3 face masks are constructed of four layers for protection comfort and breathability Layer 4— soft non-abrasive inner layer makes the src=https:reader034fdocumentsusreader034viewer2022051918600ace64b82983772323a855html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 3button div class=trans-image amp-img class=trans-thumb alt=Page 3: PowerPoint Presentation · Our ASTM level 3 face masks are constructed of four layers for protection comfort and breathability Layer 4— soft non-abrasive inner layer makes the src=https:reader034fdocumentsusreader034viewer2022051918600ace64b82983772323a855html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 4button div class=trans-image amp-img class=trans-thumb alt=Page 4: PowerPoint Presentation · Our ASTM level 3 face masks are constructed of four layers for protection comfort and breathability Layer 4— soft non-abrasive inner layer makes the src=https:reader034fdocumentsusreader034viewer2022051918600ace64b82983772323a855html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 5button div class=trans-image amp-img class=trans-thumb alt=Page 5: PowerPoint Presentation · Our ASTM level 3 face masks are constructed of four layers for protection comfort and breathability Layer 4— soft non-abrasive inner layer makes...