Features: Brand new and high quality Stay secure during your cycling adventure with this practical foldable rearview accessory for your mountain bike. Suitable for mountain bike enthusiasts of all levels, this accessory helps improve awareness of surrounding vehicles and enhances cycling safety. Perfect for various mountain biking scenarios, this accessory enables better observation and avoidance of vehicles or obstacles from behind, ensuring a safety riding experience. Crafted from durable acrylic material, this accessory provides a clear view and is resistant to wear and breakage. Its foldable feature allows for convenient storage and transportation. Make your cycling journey more secure and convenient with this portable and user friendly accessory. It adds an additional layer of security and enhances your overall cycling experience. Specifications: Material: Plastic/Resin Color: As The Picture Shows Suitable for Handlebar Aperture: 16-22mm Glass Size: approx.11x6cm/4.33x2.36in (More Size Detail, Please See Photo.) Note: Please allow 1-3mm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between differe Package includes: 2 Kinds of Package(Optional) Package 1: 1 Set of Bike View Glass Package 2: 2 Sets of Bike View Glass