Our top pick is by Hafny, which uses stainless steel in its manufacturing process. This feature alone is enough to reel in eco-friendly riders who want to reduce their carbon footprint and spend their money on durable non-plastic bike accessories. Stainless steel mirrors are recyclable, and the lens is unbreakable. These two qualities are accompanied by a high-impact frame that can be folded whenever the bike is not in use. The mirror can also be rotated at a 360-degree angle, giving you full control over its position. Plus, you can easily attach it to any kind of bike be it a mountain, city or road bike in just a few easy steps.