These are the same spikes worn by Sora Kuto Shimizu of Seiryo High School, who was selected for the World Athletics Championships, when he recorded a time of 10.00 seconds. They have only been used a few times in races. They have not been worn during practice, so there are no noticeable issues with the plate's rigidity or other dirt. There is also very little wear on the pins. A new Step shoe bag (Step limited edition color) will also be included. Thank you for viewing. Popular model/series... Chrono Inx NEO Type... Spikes