The Edge Premium Mirror is a very durable mirror for the demanding e-bike user, yet its modern design makes it a perfect fit for any bike. The lens of the Edge Premium Mirror is made of ultra-strong safety glass. The arm is made of fiber-reinforced nylon, and the handlebar clamp is aluminum. This makes the Edge Premium Mirror very lightweight yet incredibly strong and durable. The mirror is adjustable in length and angle and can be folded when the bike is parked in a bike shed. The Edge Premium Mirror is suitable for handlebar diameters up to 22.2 cm.