| Features | 3 Times More Scratch Resistant than the Original Prismshield(TM) Lens for an Extended Product Life, Double Curved Lens Limits Visual Distortion and Greatly Reduces Eye Strain, Frameless Design Increases Viewing Area by Over 20%, Honeywell Salisbury's Exclusive Weight Balancing Frame Increases Comfort by Reducing Neck Strain for Users, Nanotechnology Allows Improved Shield Transparency which Provides Better Visibility and Color Recognition in Poorly Lit Rooms, Venting Allows Usage for Longer Periods of Time |