What are the most effective bike mirrors for commuting that provide a clear and unobstructed view of the road behind, without compromising on aerodynamics, durability, or ease of installation? Are there any mirrors that can be mounted on the helmet, glasses, or handlebars that offer superior visibility and adjustability? How do mirrors with convex lenses compare to those with flat lenses in terms of providing a wider field of view? Are there any mirrors that are specifically designed for urban commuting, taking into account the unique challenges of navigating through heavy traffic and narrow bike lanes? What features should one look for when selecting a bike mirror, such as vibration resistance, weather resistance, or compatibility with different types of bikes?