The FFP3 Valved Dolomite Fold Flat Respirator (Pk20) is a vertical flat-folded disposable mask featuring an exhalation valve for lighter breathing resistance. Each mask is individually packed in a polybag for hygienic storage and includes toggle adjusters on the head straps for an optimised fit. The mask is Dolomite clogging tested and features an adjustable nose clip with ultrasonic welded straps for maximum durability.