100% PVC-free, ActivForm®: no nose clip required, AirWave® folding filter for easy breathing, so less fatigue, EN 149: 2001 + A1: 2009 certified, FFP mask, noticeably less breathing resistance, longer service life and lower mask consumption due to high filter capacity, Moldex 350501 Air Plus FFP3 NR D mask, cleanable mask edge made of comfortable, soft and skin-friendly TPE material, Ventex® Klima valve reduces heat and condensation, packed per 5 pieces in a box, adjustable headband with flexible closing clip for easy on - and take off