Ear-Loop Mask - WHITE, 50/Bx. ASTM Level 2. Sensitive and gentle to skin. High Filtration BFE 99.5% PFE 99.7 at 0.1micron, Ultra Breathable - Delta P<2.2, Latex-Free. Inner mask layer made from cellulose material - completely lint free, no tickling feeling on nose & face. Soft earloops. Extra strength fabric keeps mask away from nose & mouth. Excellent protection from transfer of microorganisms, fluids and particulate materials.