Please click here for more information about PolarizedPlus2® technology. Maui Readers™ allow you to read outside with the acuity, comfort, and protection of PolarizedPlus® 2. Maui Jim's unique design features an invisible reading segment encased in polycarbonate and positioned to optimize views, while giving you near power when you need it. Available with add powers of +1.50, +2.00, and +2.50. Polycarbonate Lens: For intense sports activities and active lifestyles. CLEARSHELL® Scratch Coating: A proprietary, silicon-based hard coat that protects both sides of the lens against scratching. PolarizedPlus®2 Technology: All Maui Jim® Sunglasses block glare and UV from all angles, manage blue light, and then boost colors for unmatched color, clarity, and contrast. Natural Grey Lens offers contrast and the highest available light reduction. Suitable for all light conditions, especially bright, direct sunlight. 12% light transmission. HCL® Bronze Lens is perfect for low-light conditions, or for those who like a subtle bronze hue for everyday wear. Offers excellent contrast. 16% light transmission. Semi-rimless frames for a virtually unobstructed view. Durable Grilamid® frame is flexible, bendable, and lightweight. Nickel/Silver Alloy Hinges: Provide strength, easy movement and corrosion resistance. Rubber nose grips. Lens and frames are saltwater safe. Case included. Measurements: Eye Size: 64 mm Bridge: 12 mm Temple Size: 144 mm Weight: 0.5 oz Product measurements were taken using size +1.50. Please note that measurements may vary by size.