The 3M Aura Disposable FFP2 Unvalved Respirator 1863+ helps protect the wearer from airborne hazardous contaminants by filtering particles from the inhaled air. An Unvalved respirator gives the protection of both a respirator and a surgical mask. 3M Cool Flow Valve is Effective removal of heat build-up provides a cooler and more comfortable wear, removes exhaled air and minimises the risk of misting eyewear