Features: Experience enhances cycling safety with our bicycles helmets rearview mirror, offering a 360 degree view to keep you aware of your surrounding. Craft from high strength materials, this mirror is scratch resistant, features a adjustable derection for clear visibilities and a fashion designs. Perfect for city street, rural road, and mountain trail, this mirror enhances your ridings experience by providing safe rear view. Easily installable and suitable for various helmets, this accessory is a must having addition to your cycling equipment collection. Great for cycling enthusiasts, especially city commuters and long distances cyclists seek added safety. Specifications: Materials: Aluminum+Acrylic Mirrors Color: Black Redness/Black Package Weight: approx.101g Size: approx.295mm/11.61in (More Size Detail, Please See Picture.) Package Includes: 1Pc Bicycles Helmets Mirrors note: Please allow 1-3mm error due to manual measurement. Please make surer you not mind before your bid. Due to the differences between different monitors, the picture may not reflect the actual color to the item. Thanks!