All entrants in timed events will be issued with a Velcro strap with an electronic transponder that needs to be secured to their left ankle. The electronic transponder is inside a blue plastic housing that is threaded onto the Velcro strap so it can slide to any position regardless of ankle size. If worn correctly, these Velcro straps CANNOT come off. All users are responsible for wearing them correctly, so please follow these instructions: How to wear a timing band. Lost timing bands must be paid for.