Features: Riding Safety: This bicycles adopts flat and has a wide field of view, and allows you to understand the surrounding environment while riding, you can see the road behind without turn your head.. Adjustable: Rearview with wrist strap, 360 degree retotation, you can easily get the viewing you want by rotating, convenient to use. The wrist strap is a strap , which can be easily adjusted in size.. Quality Material: Our side is quality ABS plastic material, firm and durable, safe and Is very versatile and suitable for people who commutes to and from get-off work by Comfortable to Wear: Our bicycles rear view quality breathable strap material, light weight, small size, easy and very comfortable to wear, and it only takes a few second to put on and takes off. Innovative Design: Unique fashionable wrist mirror, designed for wearing on arm, don not need to place on the Just put it on your arm to get a good-sense of rear visual field. Specifications: Material: ABS Color: Black Package Weight: approx.50g Size: approx.5cm/1.96in (More Size Detail, Please See Photo.) Note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks! Package includes: 1Pc Rear View