1.Fiber optic led light up shoelace 2.Material: TPU,ABS,LED 3.Color:17 colors ... pairs 5.OEM factory led Description Optical fiber led light up shoelace1. Light principle:LED fiber optic light shoelace, super bright ... the transparent optical fiber, makes the whole shoelace body light up, Each shoelace is operated by CR2032 button batteries, you can ...