Saf-T-Fit® N1139 by Honeywell Size Medium / LargeParticulate Respirators• Lightweight, humidity resistant,hypoallergenic filter media• Exhalation valve increases wearer comfortwhen working in hot environments• Three colour-coded sizes for a better fiton a wider ranger of facial features• Full sealing flange maximizesprotection and wearer comfort• NIOSH approved N99• 10 respirators per box