✅ CAREFUL. The lenses have one of the strongest filters for maximum effectiveness. This means that you will get a yellow tint which you should get used to in a few minutes. If this would bother you, you should buy glasses with less protection. These non prescription anti glare womens and mens act as a screen protect for your eyes. ✅ BONUS : Receive a free copy of the eBook: "7 tips to keep your computer alive longer and maximise its performance" by email after your purchase. ★★Description★★ The KLIM Optics are the perfect compromise between a high level of protection and a reasonable price. Indeed with KLIM you don't pay for the brand nor the marketing, only the product. Thanks to the KLIM Optics you will be able to protect your eyesight and avoid eye fatigue. ★★Warranty and Customer Service★★ You're doubly protected. Amazon's 30 day return policy returns your purchase with a full refund without any shipping costs. Our 5 year warranty. A 5 year warranty is exceptional, it's our show of faith and commitment towards our clients. We count on our customers' loyalty and we'll do our utmost to fix any issue you may have. ★★Technical Specs★★ Lenses : German Technology, 86% filter of blue light, anti-UV, scratches proof Material : Alloy Polymer, TR90, PC, Silicon Dimensions : 15 x 14 x 3,4cm Weight : 20g