The Gunnar Optiks G0005-C011 SheaDog Full Rim Ergonomic 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 high tensile steel with an mercury frame finish, the SheaDog optics has a full rim frame and fastener free hinge design for incredible durability, unique style and comfort. The lightweight construction and proper weight balance guarantee longwearing comfort without pressure points or fatigue. The single-piece front construction eliminates all welds, screws and other potential points of failure. The SheaDog is a medium fit frame with gently curved flexible temples (arms) that are designed to provide necessary retention to keep eyewear in place, conform and ergonomically fit a wide range of head and face shapes. The Soft thermoplastic rubber tipped temples grip lightly to ensure proper location of the optics without slippage, provides headset compatibility and the adjustable silicon nose pads allow you to customize your glasses for the optimal fit. Comes in a 56-millimeter lens width, 18-millimeter bridge width and 130-millimeter temple length. The Gunnar Optiks G0005-C011 SheaDog Full Rim Ergonomic Advanced Computer Glasses comes with a 1-year limited warranty against manufacturing defects.