From world-class competition to casual sport, the Smith PivLock Overdrive interchangeable lens system allows you to meet all of your athletic goals in any light condition. The 2-position adjustable nose fit, and soft Hydrophillic Megol temple tips ensure a secure, comfortable fit under any conditions. The medium sized frame and large lens offers full, lightweight coverage. The PivLock Overdrive sunglasses are ergonomically adjusted to maximize integration with bike helmets. Includes clear, ignitor and platinum replacement lens that swaps out easily when conditions call for it.