What swim cap works best to protect your hair when swimming?

competition and practice caps will keep about 90% of hair dry. my thought is this: if it is an attempt to keep chlorine out of your hair, it is best to wet your hair with tap or bottled water first. hair soaks up water like a sponge, so if your sponge (hair) is saturated with low chlorine water, then not much else can get in to do damage. aloha