This mirror is designed for wearing on arm, don't need to place on the bike. Perfect quality and weather-resistant. You can have a try. Features: It is designed for wearing on arm, wristband is made of high-quality breathable cloth and elastic material. It's lightweight and compact supports rotation in 360 degrees, so you don't have to turn your heads while riding and it will make you feel more secured in outdoor cycling. Wide view convex mirror provides a wider view. Rearview mirror can adjust angle freely to view the car in the back, increae the safty Convex type mirror, diameter 36mm, crystal clear view. Easy to open, but tightly closed. Specifications: Color: black Material: plastic For people: for both men and women Size: one size fits all Item size: 63 * 51mm / 2.5 * 2.0in Mirror diameter: 36mm / 1.4in Package size: 108 * 70 * 35mm / 4.2 * 2.8 * 1.4in Package weight: 37.1g / 1.3ounce Packing List: 1 * Arm Mirror