ANTI BLUE LIGHT & UV - our patented amber tinted lens block 60% blue light in overall with perfect balance of filtering 85% very harmful blue light in the 400~440nm wavelength and allowing transmittance of 56% less harmful or even beneficial blue light in the 440~500nm wavelength. Blocking too much light or wearing too dark color lens may affect vision or increase risk of color weakness (partially colorblind) over time. NO MORE EYE STRAINS & GLARES - anti reflective (AR) coating and tinted lens eliminate glare, improve contrast, and enhance depth perception, reducing digital eye strains, eye fatigue, and headache, optimizing visual acuity clarity with fewer distractions and more viewing comfort, and helping fall asleep faster. Ideal for working, gaming, or browsing on PC, tablets, smart phones, TV or near office LED lights. THINNER and LIGHTER! It weights ONLY 8g (0.28 oz) and can be easily slipped into your pockets. Easy clip on feature works well with all kinds of prescription eyeglasses frames including rimless ones. SILICONE FEET COVER can effectively protect your lens from scratching, and increase friction to prevent sliding. Made with super lightweight and durable high quality materials. PLEASE check out the detailed dimensions shown in the picture before purchase!. GIFT WORTHY PACKAGE include 1 hard case, The outer box is made from 100% recycled fiber and is 100% recyclable.