These are brand new in the box and have never been used. It comes with 3 lenses that you can change out very easily. A green sol-x lense, a clear lense, and a medium light lense. here is the link to these sun glasses on smiths web site. http://www.smithoptics.com/Root/Men%27s/Sunglasses/New/PIVLOCK-OVERDRIVE/p/OVPCGMBK
The Pivlock Overdrive, a complete rethink on what a sunglass can help you accomplish. From world-class competition to casual sport, the patent-pending interchangeable lens system allows you to meet all of your athletic goals in any light condition. Key features include a new two-position adjustable nose fit and three sets of performance proven optics included in every case. Ergonomically adjusted to maximize integration with bike helmets and running hats so you can focus on the open road or trail ahead and leave the competition behind.
Green Sol-X Mirror lense
A true color Gray lens base with multi-layer Green Mirror cuts glare and reduces eye fatigue in bright, sunny conditions. Hydroleophobic coating repels water, dirt, and grease. Provides 100% protection from harmful UVA/B/C rays.