This is Smith's 4D MAG goggles. The magnetic and lever lock system allows for smooth and speedy lens changes and maintenance. I've only used them a few times since purchasing, all in backcountry conditions. There may be some minor scratches from branches, etc., but nothing that affects visibility. Both lenses are ChromaPop (ST and SN), so they can handle all weather conditions. I may lower the price depending on my circumstances, but I'm not considering lowering the price for individual items, so please understand. I'll also include an EQ lens cloth and a Smith goggle case (from another model).