i-AMP technology, amber lens tint, anti-glare coatings and ultra-pure lens material provide sharper, clearer vision so you can work more efficiently and feel more comfortable * Made of high tensile steel with an onyx frame finish and gently curved temples (arms) * Fastener free hinge design for long lasting durability and comfort without pressure points or fatigue * Conforms with all head sizes and will not interfere with your headset * Comes with a 1-year limited warranty against manufacturing defects