It's striped.
Be aware that the pattern mutations of the Cali King are not simple recessive traits. They are line-bred aberrations. In other words...breeding a "stripe" to a "stripe" will not always produce 100% stripes. Being aberrant by nature means that the pattern will fluctuate and vary greatly...
Who did you get this king from? It *might* be a locality, which doesn't mean much to some people, but means a lot to those that are working them...