Engineered for maximum comfort, durability and visibility, the Ultimate FX FF-400 is the only respirator with Scotchgard™ protector. This respirator features soft yet durable, silicone material and a large lens for superior peripheral vision. The 3M™ Ultimate FX full face piece reusable respirator FF-400 Series helps provide protection against certain airborne contaminants while keeping your vision clear with the Scotchgard™ protected lens. Scotchgard™ protection makes it possible to wipe paints, stains and other liquids off the large lens. Versatile - use with 3M™ particulate filters, gas/vapor cartridges and supplied air systems. The 3M™ Cool Flow™ valve helps make breathing easier. Passive speaking diaphragm enhances communications, making it possible to be understood when talking. These features combine to make extended wear of the face piece more comfortable and practical to use while helping to provide protection against certain airborne contaminants.