The Clarks Spark Flash K boys light up trainers will flash and spark with every step. There is a handy on and off switch on the side to help preserve battery whilst the bungee lace and rip tape strap helps with fastening. Colour:Blue Manufacturer StyleID: 6728-37G Upper Material:Leather and Man-made Lining Material:Textile Footbed:Textile Fastening:Velcro and Bungee Lace Removable Insoles:No Highlight:Lights Up Width:G - Wide Fit Clarks - Spark Flash K 261672837g - G Fit (blue)