3M  Model 6502/49489 Medium Rugged Comfort Half Facepiece Reusable Respirator features proprietary Cool Flow valve helps reduce heat and resilient silicone faceseal that provides comfort, durability and stability with a soft but firm seal. Respirator includes low profile half facepiece design offers a wider field of view and adjustable head harness assembly for improved fit and comfort. Respirator is designed to help promote comfort, durability and stability with a firm, lightly textured silicone faceseal and strong body construction. It is ideal for assembly, cleaning, demolition, facility maintenance, grinding, machine operations, sanding and welding.