Additional Details ------------------------------ Product description: Engineered for maximum comfort, durability and visibility, the Ultimate FX FF-400 is the only respirator with Scotchgard Protector. Offered in three sizes, it features soft yet durable, silicone material and a large lens for superior peripheral vision. The 3M Ultimate FX Full Facepiece Reusable Respirator FF-400 Series is 3M's most rugged facepiece, providing Flexibility in X-treme environments while still delivering superior comfort and an exceptional field of view. This facepiece offers an ergonomic, streamlined design – for lightweight, balanced comfort. Special feature: Comfort head cradle - positions the respirator more comfortably on the head, reducing pressure points and hair pulling. 3M™ Cool Flow™ Valve for easier breathing and cool, dry comfort. Large lens for excellent peripheral vision. Low profile bayonet cartridge attachments, designed for improved balance and better weight distribution. Long-lasting head harness - straps pulled over one million times in durability testing. Six-strap configuration for a secure fit. Silicone nose cup and...