DUCO Optiks 230 Matte Black Semi Rimless Video Gaming Computer Glasses with Lens Tint TR90 Arms LENSES--Brown lens tint, anti-glare coatings and ultra-pure lens material provide sharper, clearer vision so you can work more efficiently and feel more comfortable. FUNCTION--Block the glare with the only patented computer eyewear recommended by doctors to protect and enhance your vision through the use of their specially designed lenses featuring proprietary tints and block blue light and glare . FRAME--Weighing in at only 20-grams, these lightweight glasses are properly balanced to reduce pressure points and combat eye strain,140-millimeter temples and full rim frame are forged from injection polymer to ensure lightweight durability. Great for BrFEATURESPrevents dry eye, irritation and sharpens detail to ease eye strain,Filters blue light and UV to enhance contrast and protects eyes.Reduces glare to eliminate distraction and stress. 30 DAY MONEY BACK GUARANTEE-100% satisfaction guaranteed. We are not only selling sunglasses but also providing excellent customer service. We promise if you are not happy with DUCO glasses within the first 30 days