This small 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. 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.