YakAttack ShortStak Upgrade Kit for BlackPak ProProduct Details Following the release of the reimagined BlackPak Pro, it has been clear that for many anglers, bigger is better. With that concept in mind, our design team began working on solutions to increase the usable space, inside and outside, of the BlackPak Pro. The resulting product does all of that, and will come in three different sizes to fit all three BlackPak Pro models. Please note, this is not a stand alone box and requires the use of a