Wisamic Cycling Bicycle Bike Rear View Mirror Wrist Guards Wristbands Back Mirror Black [Innovative Design] The wristband is designed to be rear view mirror. It can be used as a bicycle and a motorcycle mirror. Free of control, convenient, wide field of vision. [360 Adjustable] Mount with an elastic fastening belt that can adjust this bicycle mirror to adult or childrens wrist. Also can be rotated around the wrist to find the best rear view for yourself. Adjustable mirror height. [Free from Burdens on Your Wrist] The net weight is just 34.2g. T-Shape rubber buckle prevents the wrist band falling. [Breathable Fabric] Made of high quality breathable material which you may feel very comfortable during wearing. Don't worry about sweating on the long-distance driving. [Extra pocket function] There is an inside pocket where you can put bills, coins and key.