This 3M half face piece 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. It's made from a durable silicone and can be used with any of the 3M™ Filters and Cartridges, Series 2000, 5000, 6000 and 7093.Maximized comfort in air purifying respirators means not only easy breathing filters and cartridges, but also a soft comfortable face piece. Half face piece air purifying respirator users can now experience state-of-the-art features that help provide unsurpassed comfort with 3M™ 7500 Series Ultimate Reusable Half Face piece Respirators.Available in Medium and Large Sizes.