(1) Meet the International Sled Federation Certification Requirements;

                                                                                                  (2) consisting of two skid blades, two blade holders, one base (lying board), and two bridges;

                                                                                                  (3) Provide matching skid blades;

                                                                                                  (4) The base (lying board) can be tailored according to the athlete. The athlete's flat is lying on the base, the                                                                                                         shoulder does not exceed the rear extension, and the knee bend does not exceed the forward extension.