Cal. Gov. Code § 19850.7
In addition to other equipment furnished to peace officers within the Department of Corrections and the California Youth Authority, the department and the California Youth Authority, in accordance with the terms of a memorandum of understanding reached pursuant to Section 3517.5, shall provide protective vests for peace officers within the department and the California Youth Authority. The protective vests shall be manufactured to specifications as agreed to by the state employer and the employee representative after consultation with appropriate state agencies. The protective vests shall cover the entire torso of a peace officer and shall be designed so that they are capable of protecting an officer against a knife attack.
Ca. Gov. Code § 19850.7