These are AirFly sunglasses. The lenses are C3-BK, and the frame (red) is a store-exclusive model. 【Lens Description】 The AirFly AF-301BK series is primarily developed for cycling. The wide-ranging bicycle lenses, both vertically and horizontally, provide a stress-free field of vision even in a forward-leaning riding position, preventing wind from entering and protecting against obstacles such as flying stones. They contribute to improved performance by ensuring clear vision at high speeds. These are non-photochromic lenses with a gold mirror coating on the front. With a visible light transmittance of 20%, they provide a view that moderately reduces glare. The purple tint doesn't give a dark impression, making it easy to grasp the surrounding situation and information. An anti-reflective coating (AR coating) is applied to the back of the lenses to reduce distracting glare. Although these lenses are made for cycling, they can also be used for sports such as marathons. Compatible with the AF-301 and AF-302 series.