3M™ Half Facepiece Reusable Respirator 7500 Series, Respiratory Protection (Box Of 1)The 3M Half Face Reusable Respirator 7500 Series has a soft, silicone face seal for greater comfort and durability. The 3M Cool Flow Valve helps make breathing easier and can reduce heat and moisture build up for cool, dry comfort. Combine with a broad range of twin, lightweight 3M filters or cartridges to provide respiratory protection against particulates and a variety of gases and vapours. For a reusable respirator thats comfortable to wear, use 3M