The easy-to-attach Nite Ize L.E.D. SpokeLit is the perfect way to
increase your visibility, safety, and cool factor when you're riding
your bike in the dark. Fueled by an efficient L.E.D bulb, this handy
little device has two illumination modes—steady glow and continuous
flash—to choose from. Press it onto the spokes of your wheel and slide
towards the rim until the fit is tight, and it stays securely in place.
And, here's the fun part: the SpokeLit not only marks your bike plainly
in the dark, when you're riding at medium speed or faster, it creates
the attention-getting effect of a moving circle of light. Water and
shock resistant, it fits almost all kids' and adults' bike sizes.