The 3M™ Respirator 8511 is part of the pro series line of face masks. Built with pro workers in mind, this valved respirator reduces heat buildup inside of the respirator, helping to enhance comfort during long-term use. This N95 respirator also features advanced electrostatic media that enhances the capture of airborne particles while allowing you to breathe easier.Designed for a reliable and secure fit, the 3M™ Respirator 8511 is also built for comfort. Each respirator is equipped with soft interior foam and an adjustable nose clip that helps ensure a secure, comfortable, and personalized seal. Additionally, this respirator is lightweight, helping to ensure comfortable use over long periods.