Description:They are shoelaces but not normal ones, because they could light up and flash!Ultra bright and eye-catching.Durable, waterproof and washable glass fiber as material.Suitable for almost all shoes with shoelaces, such as board shoes, roller skates, sneakers, etc.Let you stand out in party, KTV, bar, prom, dance.Especially ideal for night.How to Use:Install 1x button cell battery into each control box.Lace up your shoes with these 2 shoelaces.Push the control button in turn to control the lights: on/flash/strobe/off.Features:Light source: LEDLight color: (as shown in the pictures)Modes: Long light/fast flash/slow flash/offPowered by: 1 x button cell battery for each control box ( batteries NOT included)Shoelace material: Glass fiberControl box material: ABSControl box size: 5.8x3.1x1.5cmLength: Approx. 80cmNet weight: 42gAvailable Color:19 Kinds Color For ChoosePackage Included:1 x 1 pair of LED shoelaces