These Radians SHIFT Shooting Glasses feature interchangeable lenses, meaning you have the ability to customize your eye-protection according to the lighting condition of your immediate surroundings. In addition to providing the shooter with clear vision regardless of the event or environment, these glasses exceed the safety standards established in ANSI Z87.1. The frameless design provides a unobstructed view while the aluminum alloy temples are lightweight and strong. Reverse hinges and adjustable nosepiece provides a custom fit to maximize comfort. Neck cord and hard case are included.