NIOSH N99 Approved Delivers N99-class protection against airborne non-oil particles N99 Smart Mask (with valve) Flat fold, premium disposable respirator Compatible with Oxy Active Ventilator for enhanced comfort Oxy Active EXHALATION VALVE An ultralight membrane concentrates the exhaled air into two zones of maximum aperture, 30% wider than before. With these improvements breathing resistance decreases significantly. FACE PIECE Large surface guarantees greater coverage of the users face and lower breathing resistance. NOSE CLIP Internal, placed between two layers of fabric so as to reduce the exposed metal parts to a minimum. FOLDED Allow the respirator to be pocket sized and able to be distributed with alternative solutions such as vending machines.