This 3M half facepiece medium respirator is a reusable respirator that offers reliable and convenient respiratory protection and is suitable for many situations and provides breathing protection when used with 3M filters and Cartridges. This a Medium Face size respirator and Small and Large Respirators are also available. This medium 3m Respirator will help to provide protection against particulates and a wide variety of gases and vapors when used with proper 3m Filters and Cartridges according to NIOSH approvals