Get your spark on with the high-flying jetts by Razor Just step up, strap down and take off with these easily adjustable and always awesome heel wheels Features easily removable and replaceable spark pads, proprietary 50 mm urethane wheels and heavy-duty "Quick click" frame with hook and loop strap Fits all shoes sizes U.S. Youth 12 through adult 12 Recommended for ages 6 and up (8 and up with spark); supports riders up to 220 pounds