VIVIENFANG Flat Top Aviator Polarized Sunglasses Ombre Lens Boyfriend Shades P1835 Imported plastic frame anti-reflective lens polarized Lens width: 61 millimeters Lens height: 50 millimeters GREAT CLARITY OF VISION--100% UV400 protection coating,blocks 100% harmful UVA & UVB Rays. VIVIENFANG Sunglasses use 1.1 mm Polarized Lenses which offer more impact to reduce debilitating glare and light scatter,thus reducing general eye fatigue.They provide a natural vision from transmitting original colors without any modifications. SOME PEOPLE ARE MORE SENSITIVE TO POLARIZATION AND SOME ARE NOT--so this could be akin to other people getting dizzy with polarized shades and some not.This isn't quality problem,it is therefore recommended that sensitive people choose NON-POLARIZED sunglasses.There is an easy ways to check if your lenses are polarized,by staring at a digital screen, like a phone or dashboard in your car, you will immediately see a rainbow over it. LIGHTWEIGH and DURABLE FRAME--These sunglasses are made of high quality polycarbonate,lightweight,durable and comfortable.Measurements: Overall Width: 143mm(5.7inches), Lens Width: 61mm(2.4inches), Lens Height: 50mm(1.97inches), Temple Length: 139mm(5.47inches), Bridge Width: 20mm(0.79inches) These sunglasses are more suitable for people who have a narrow faces,please note the size before you buy them. MATTERS NEED ATTENTION--Polarized lenses are made from thin sheets of film,they're coated with a special chemical film that helps reduce glare,please do not drop Polarized sunglasses in the seawater or pool for long time as the water is too strong which might hurts the coating ,and the coating of the lens will start peeling. RETURNS & EXCHANGE--We will gladly accept returns of unworn, undamaged or defective merchandise purchased on amazon for full refund or exchange within 30 days of the original purchase.If you have any questions,please do not hesitate to contact us. You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it! <span class="a-text-bold">Increases visual comfort.</span> Since your eyes arent constantly challenged by glare, it is easier to view objects in bright conditions. <span class="a-text-bold">Reduces eyestrain.</span> Frequent adjustments to the glare from reflections is taxing on the eyes and can lead to eye fatigue. <span class="a-text-bold">Also please do not drop the glasses in the seawater for long time as the water is too strong which might also hurts the coating. We should be nice to our sunglasses and wash them with running water before wiping them with a microfiber cloth. </span>Of course,  please  make sure not putting lenses face down as well. Please never leave your sunglasses under car&#039;s front window, especially in summer. Prolonged exposure to the oven-like temperatures inside a car can degrade the lens.