Flammi LED Nylon Shoelaces Light Up Shoe Laces with 3 Modes in 5 Colors Disco Flash Lighting The Night for Party Hip-hop Dancing Cycling Hiking Skating-Type C Shoelaces: all nylon, exclusive of white light controller and ends cover of shoelaces. White light controller: LED, plastic cover. Come in 1 pair of nylon shoelaces with light emitter Suitable for any kinds of Shoes, including running shoes, boots and skates Perfect for parties, night activities, safety and all kinds of night life fun! Batteries are included, last for about 30 hours when the light stays on. Last for 60-80 hours in "blink" mode 3 light modes: stay on; blink slow; blink fast. Real shoelaces are easier to be tied 100% satisfaction guarantee. Any problem, please contact us, we always stand behind our product