This 3M Half-Face Respirator offers easy breathing with comfortable and durable respiratory protection. This respirator is made from an advanced silicone material for increased comfort and greater durability, with a proprietary CoolFlow Valve to help make breathing easier and cooler. The head harness adjusts for use in standard or drop-down modes. This respirator is NIOSH approved to protect against a variety of gases, vapors and particulate hazards. Respirator includes one Organic Vapor Filter Refill Kit, which includes: 2 organic vapor cartridges, 2 retainer clips and 4 cotton pre-filters. The Organic Vapor Refill Kit is also available separately.