1,Safety and Visibility: The mirrors are designed to improve visibility when riding on busy roads. It is developed with practicality, convenience and especially security in mind. 2,For Wrist Wearing: Wear it on your wrist, just like a watch, because it is on your wrist, you can make slight movements with your hands to get a bigger view without taking your hands off the handlebars. 3,360 Rotatable: It has two internal extension arms and a base that swivels 360 degrees, which means you can position the mirror to suit all riding styles. The comfortable neoprene strap can be lengthened for winter clothing and can be easily removed for cleaning. 4,Convenient and : It works on either wrist. It 't get stolen when worn on your wrist, 't get stuck or damaged when storing your bike, and it's so light you 't even notice you're wearing it. Colour:Black Material:plastic Package Contents: 1 x Bicycle wrist mirror Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.