1.Fiber optical led flash shoelace 2.Material: TPU,ABS,LED 3.Color:17 colors ... :100 pairs 5.OEM factory led Description Optical fiber led flash shoelace1. Light principle:LED fiber optic light shoelace, super bright ... :Shoelace flashing light mode: long bright flash,slow flash continuous constant light time: 30 hoursIn flash, slow flash, or intermittent use: light time in ...