PDFWAC 260-32-105
Safety equipment.
(1) It shall be mandatory that jockeys wear a protective helmet and safety vest in compliance with WAC 260-12-180.
(2) The weight of the protective helmet shall not be included in the jockey's weight.
(3) The safety vest shall weigh no more than two pounds and shall not be included in the jockey's weight.
(4) Safety vests shall not be altered.