Fine dust masks Air 3150, size S, FFP2 NR D, 10 unit(s)Fine dust masks Air 3150, size S, FFP2 NR D Acc. to EN 149: 2001 + A1: 2009. Protection against dust, aerosols and fumes: Anatomically preformed masks adaptable to fit different face sizes DuraMesh: sturdy mask mesh keeps the mask in shape ActivForm: no nose bridge required Fluted filter technology: 260% more filtration area, very low breathing resistance, high absorption capacity, long life All round strap with adjustable clip for easy application,