Feature:1.Useful and fashionable2.Suitable for any kinds of Shoes, including running shoes, boots and skate.3.Awesome and Eyes-catching Great for the parties, night jogging, safety and all kinds of night time funHow to Use:Install 1x CR2032 button cell battery into each control box.Lace up your shoes with these 2 shoelaces.Insert the top of each lace into the 2 holes of the control box, switch the lock to "lock"mode.Push the white button in turn to control the lights: on/flash/strobe/offMaterial: LED + High articulation plastic fiber.Color: green, orange, blue, red,pink,multicolourPower: 2 * CR2032 button battery (included).Size: Approx 80 cm/31.5inWeight: approx.30g Modes:Steady On/fast flash/normal flash. Package list:1 Pair Of Shoelaces