Abstract: An article of apparel which includes at least one LED which is intermittently and repetitively turned on. In one form, a hollow ball or shell contains an LED and a digital pulser comprising a battery and a digital oscillator for passing successive pulses of current through the LED. Preferably the shell is made in two separable and halves, to permit easy access to the interior to turn it on or off manually, to repair it, or to replace the battery. In another form, the invention comprises a linear series of LED's on a strip which can be fastened between the laces and tongue of a shoe, the LED's being successively turned on momentarily to produce the appearance of light moving along the strip.