The Line Miner goggle was created with the purpose of providing the ultimate in peripheral vision, with a cylindrical-style design. We were able to pull the goggle in closer to your face than ever before, allowing for incredible downward and side-to-side periphery. With a large-sized ?t, Line Miner is optimized for a wide variety of faces and is engineered to ?t perfectly with most helmets. Prizm™ is a revolution in lens optics built on decades of color science research. Prizm™ lenses provide unprecedented control of light transmission resulting in colors precisely tuned to maximize contrast and enhance visibility. PRIZM SNOW SAPPHIRE IRIDIUM - Light Transmission: 20%, Light Conditions: Bright Light, Contrast: Increased, Base Lens Color: Sapphire Features: Prizm™ Lens Technology Two lenses included Dual pouch microbag included for storage and lens cleaning Fit: Standard Switchlock® Lens Change System Wide 50mm wide adjustable strap with silicone lining for a more secure fit Rigid exoskeleton with flexible O Matter faceplate conforms to your face comfortably, even in extreme cold Low-profile frame design provides increased visibility and improved helmet compatibility All-day comfort of triple-layer face foam with moisture wicking polar fleece lining Injection-molded Plutonite® lens material provides 100% protection against UVA / UVB / UVC & harmful blue light up to 400nm Optically correct Dual-Vented Lens with F3 Anti-fog coating Meets impact requirements based on ANSI Z87.1 and EN 166 standards