Gunnar Optiks ST003-C012 Emissary Semi-Rimless Advanced Computer Glasses with Squared Off Lenses and Amber Tint, Graphite Frame Finish Kill 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 coatings that block high-energy blue light, UV and glare Weighing in at only 15-grams, these lightweight glasses are properly balanced to reduce pressure points and combat eye strain, while the Amber tint lens makes these computer glasses great for gamers too 134-millimeter temples and full rim frame are forged from aluminum-magnesium alloy to ensure lightweight durability, increase optical stability and enhance visual detail throughout the day Keep your glasses in place with the 18-millimeter bridge and adjustable pads that articulate (3) dimensions for a dynamic fit, while the micro-engineered lens and spring hinges flex to ergonomically fit a wide variety of head and face shapes Limited Warranty that covers against defects for (1) year after purchase; these Advanced Computer glasses with a medium fit are perfect for those who know the immeasurable value of design and creativity