MASK, FACE W/EARLOOPS 3-FOLD MEDICAL GRADE (50/BX 10BX/CS) Metal nose piece conforms to face for a comfortable fit Fluid resistant unique 4-fold design, different from traditional 3-fold face masks, utilizes more protective material to form a better cone shape providing maximum coverage on the wearer Meet the ASTM F2100-11 requirements as Performance Level 2 Barrier medical face mask