KAPAS LED Nylon Light Up Weatherproof Shoelaces, One Pair, 3 Flash Modes (On, Strobe & Flashing) 4-Ft Length, Powered On/Off Switch Each string for longer service time: constant lighting for 30 hours; flash model for 60-80 hours Three lighting modes: constant bright, fast flash and normal flash; Press the center of the battery case to switch modes Wrap around Hand, Arm, Foot or Bike, Tent etc. to make sure you are both safe and visible. Work on any type of lace-up shoes, including boots, sneakers, dance shoes, skate shoes board shoes, roller skates, and so on Package included: 1 pair of LED light up shoelaces. Shoes not inculded.