duco mens sports polarized sunglasses uv protection sunglasses for men 8177s(gunmetal frame revo blue lens) duco <b>functional glasses, duco is no.1-slogan</b> <br>1-united states registered brand sunglasses , trademark registration number is 4643912. <br>2-duco focuses on a wide variety of functional glasses, from uv400-protection polarized sunglasses to anti-blue-light gaming glasses, night vision driving glasses and sports cycling glasses.<br>3-among amazon, there are many similar style sunglasses seller, trust brand, trust service, you will get beyond what you paid. <br>4-lifetime warranty and 100% satisfaction guarantee. <br> <br> <b>polarized sunglasses</b> <br>1-polarized sunglasses have a filter that reduces glare from reflecting surfaces (water, snow, road pavement) which interfere with vision. <br>2-they can be highly useful for sports, driving, and fishing by helping you to see more clearly. they provide premium protection against the sun's harmful rays. <br>3-duco lens are uv400 protection and different from other brand's uv375 protection lens. <br> <br> <b>new and improved</b> <br>you spoke, we listened. <br>1-the nose pad provides even more grip to ensure good placement. <br>2-the anti-scratch coatings are now even harder and stronger <br>3-the frames and nose pieces can be gently bent to tailor the fit exactly for your comfort. <br> <br> <b>includes</b> <br>1*glasses case <br>1*cleaning cloth <br>1*fabric pouch <br>1*polarized testing card <br>1*mini screwdriver <br> <br> <b>tips</b> <br>1-never leave your sunglasses under car's front window, especially in summer. <br>2-never use seawater to clean the lens. <br>3-don't look directly at the sun.<p></p>