A. This bicycle rearview mirror is a thoughtful accessory for cycling, adding an extra layer of safety to your ride. B. It features adjustable and foldable functions, allowing cyclists to easily adjust the angle according to their needs and preferences. It can be folded up when not in use for convenient carrying and storage. Whether you're navigating through the complex terrain of mountain biking or riding on the flat roads of daily commuting, this rearview mirror can function stably. C. In terms of design aesthetics, there are two styles to choose from: the long diamond shape and the short round shape. The long diamond design is simple and elegant, with its unique shape showing a distinct style during cycling. The short round shape gives a cute and round - edged feeling, adding a touch of playfulness. Both designs are carefully crafted to meet different aesthetic needs. D. The mirror is made of glass/colored glaze, which can ensure a clear view of the rear situation, enabling cyclists to keep informed of what's behind in a timely manner. It also has a certain degree of durability. It can withstand various environmental factors and the bumps of daily use, accompanying cyclists through numerous wonderful moments. Whether you want a double - pack for simultaneous installation or a single - pack to meet specific needs, this product offers more options for cyclists. Choose this rearview mirror to make your cycling experience safer and more stylish!