Flammi LED Shoelaces Light Up Shoe Laces with 3 Modes in 5 Colors Disco Flash Lighting the Night for Party Hip-hop Dancing Cycling Hiking Skating Gerneration Two light emitters and two 32'' fiber optic laces included in a single set 3-Mode Function - Solid, Slow Blink, Fast Blink Suitable for any kinds of Shoes, including running shoes, boots and skates Endless applications - Mix and match colors, link multiple units in a chain for use as a bracelet or necklace! Batteries are included, lasted for 70 hours