Combine economy & function Molded from a custom engineered thermoplastic blend that provides comfort and compatibility without compromise Low profile design fits under most grinding or welding helmets and provides extended field of vision Large inhalation valves provide maximum surface area, reducing inhalation resistance while increasing user comfort and productivity Patented corrugated exhalation valve design and minimized ""dead air"" space provide low breathing resistance and added comfort Patented multi-position cartridge placement allows maximum compatibility with other PPE Textured no-slip face seal and swivel retainers ensure proper placement and provide a comfortable seal on a wide variety of faces Enhanced harness assembly features metal tabs finishes on nylon straps to prevent fraying allow easy adjustment when wearing gloves Reusable respirators eliminate the need and cost of disposable N95s; proven 95% waste reduction and a 90% reduction in costs spending on NIOSH approved respirators Facepiece Material Thermoplastic