Duco Night-vision Glasses Anti-glare Driving Eyewear Polarized 2181 Imported LENSES--Polarized yellow lens, anti-glare coatings and ultra-pure lens; Shatterproof ,Impact And Scratch Resistant, Lightweight And Durable; Check left image on listing page to see how to test polarization; FRAME-Lightweight AL-MG Alloy Design Is Ideal For Usage By Motorcycle And Cycling Bicycle, Driving, Running, Fishing,Racing, Skiing and Climbing, Trekking Or Other Outdoor Activities Enthusiasts; FEATURESBlock the glare from headlight;Add contrast to your vision and increase visual clarity;Very good for driving at night,dusk or rainy day; Lens width:72mm-lens height:38mm-bridge width:15mm-arm length:145mm. The frame ,nose pad and temple is flexible and bendable to fit different size; 30 DAY MONEY BACK GUARANTEE-100% satisfaction guaranteed. We are not only selling glasses but also providing excellent customer service. We promise if you are not happy with DUCO glasses within the first 30 days, we will refund you without any reason and take care of the returning shipping fee.SO NO RISK ON TRY!