Reprisers allow the use of both dual-wielding and shield abilities.
In order to obtain reprisers, you first need a dragon defender from the warriors guild. This gives reprisers an additional requirement of either 130 combined attack and strength or 99 in just one melee skill. In a similar fashion to the original defenders, you must be carrying lower tier defender to obtain the higher tier one.
Defenders, reprisers, and rebounders