The white front light and red tail light mount quickly onto bicycle handlebars, seat posts, baskets, bags, helmets or clothes. Great for cycling, running, or any activity where visibility and safety are a concern. The flexible stretchy body wraps around handlebars and hooks onto the integrated clip quickly and easily, tool-free! Won"t damage paint on bicycles. Be creative in placement with its many uses; bicycle spokes, pedals, backpacks or even dog collars and children"s shoes! Batteries are easy to install, just pull back the body from the battery compartment and slide the batteries in. A quick-release latch releases them in less than a second. The On/Off switch is concealed. Just press the top of the light to turn it on or switch between modes. One press for "on" and another for "flash", press again to turn it off.