This large half facepiece was designed with the wearer in mind. Its soft sealing surface, along with a uniquely designed, 3M Cool Flow Exhalation Valve, enhances wearer comfort and face fit. Maximized comfort in air purifying respirators means not only easy breathing filters and cartridges, but also a soft comfortable facepiece. Half facepiece air purifying respirator users can now experience state-of-the-art features that help provide unsurpassed comfort with 3M 7500 Series Ultimate Reusable Half Facepiece Respirators. They are made from a durable silicone and can be used with any 2000, 5000, 6000 & 7093 series filters and cartridges.