The Avi-Spark combines the awesomeness of a light-up shoe with the ease of a bungee lace slip-on, making it just as exciting to parents - who don't have to worry about tying - as it is to kids. The crystal TPR soleplate has impact lighting that flashes on whenever kids step on a surface, so you'll see them coming and going everywhere on the playground. Mesh fabric & synthetic upper Slip on with stretch elastic laces Cushioned footbed Padded tongue & collar Rugged outsole for traction with impact lighting Available in Little Kid sizes 11 to 3