PRODUCT INFOLow breathing resistance for increased wearer comfortHeavy duty, tab mounted, head strapsColour coded plastic adjustable nose clipSoft foam nosepiece for comfort and custom fitExhalation valve reduces hot air build-up and provides easy breathing in hot and humid environmentsPRODUCT RATINGBS EN 149:2001 + A1:2009 FFP3 NR DNRCS AZ2004/17..