The Gunnar Optiks JOU-05501 Joule Full Rim Advanced Computer Glasses is an excellent “out-of-the-box” solution to improve your visual performance and reduce eye fatigue for those with 20/20 vision. Eyestrain, visual stress and dry eyes can be caused by extended periods of digital screen viewing and office lighting. Gunnar’s digital eyewear filters out the harsh, high-energy part of the spectrum and creates a more relaxed viewing experience to help your eyes focus more naturally. The amber lens tint, anti-glare coatings and ultra-pure lens material help provide sharper, clearer vision. Gunnar’s i-AMP lens technology is specifically engineered to reduce digital eyestrain and enhance viewing detail so you can focus longer, work more efficiently and feel more comfortable. Made of acetate with a amethyst frame finish, the Joule optics is designed with lightweight construction and proper weight balance to guarantee longwearing comfort without pressure points or fatigue. The Joule is a medium fit frame with a single-piece front construction that eliminates all welds, screws and other potential points of failure. European handcrafted materials provide rich detail and multi-layered acetates catch and reflect light showing off the rich and modernistic design. A true gem, JOULE is style with a classic cat-eye lens. Comes in a 54-millimeter lens width, 17-millimeter bridge width and 135-millimeter temple length. The Gunnar Optiks JOU-05501 Joule Full Rim Advanced Computer Glasses comes with a 1-year limited warranty against manufacturing defects. GUNNAR Advanced Computer Eyewear is designed to combat issues like harsh fluorescent light, glare, digital screens and ambient air currents that cause your eyes to dry out. Let GUNNAR create a more stylish, comfortable and rich visual experience.