This is for the White shoestrings. Materials: Nylon cord and LED light; Size: Length 120 cm / 47.2 inch, width 0.8 cm / 0.3 inch. There are 3 light modes - stay on, fast flash, slow flash; can be adjusted according to your needs. It works perfectly with all your shoes at home including sneakers, casual canvas shoes or leather shoes even plus boots and roller skates. Each shoelace needs 2 CR2032 button batteries (included), battery pack is on the center of the lighted shoelace.