Half disposable mask FFP2 SAFE AIR NITRAS®. Mask without filter/valve package with 20 units, adjustable nasal fit for better protection and rubber lashing straps (no latex) compatible design for wearing glasses. Protection against solid and liquid aerosols non-toxic at concentrations up to 12x MAC / OEL / TLV or 10 x APF. Certified as filtering semi-masks against particles - EN149.