HDCRAFTER Men's Outdoor Sports Polarized Sunglasses for Driving Fishing Golf metal frame Composite lens polarized Lens width: 68 millimeters MEASUREMENT  Lens Height: 41mm (1.61 inches) Lens Width: 68mm (2.68 inches) Nose Bridge: 20mm (0.79 inches) Temple Length: 135mm (5.31 inches) Frame Length: 158mm (6.22 inches) FASHION FRAME DESIGN -HDCRAFTER cycling sunglasses use of advanced high-quality materials , aluminum-magnesium alloy , Its hardness is several times of traditional plastic, but they are scratch resistant, durable and unbreakable and adjustable. LIGHTWEIGHT AND FLEXIBLE  The sports sunglasses are light-weighted for ergonomic wear and stresses free even when you put it on for a day long. Also, the arms are elastic with spring hinges that can adjust the size to suit the persons with large head or big face. POLARIZED LENS  The vintage retro mens sunglasses polarized lens of UV400 is designed for your eyes health during driving at day or night, cycling, fishing, hunting, general outdoor sport activities to help prevent direct sunlight or other brilliant light from your eyes 100% by reducing glare by blocking reflection, UVA, UVB, UVC rays. Also, bifocal polarized sunglasses make images to appear sharper, clearer, increase your visual clarity and night vision to see clearly and for your comfort. RISK FREE PURCHASE  All HDCRAFTER Sunglasses are backed by a LIFETIME warranty on frames and lens as well as a 30-Day Money Back Guarantee when purchased from authorized dealers. So if you are not completely happy with your purchase for whatever reason, we'll do whatever it takes to make it right.