The Poseidon comes with the full chest pocket accessory that has 3 zippered compartments and a lash tab on the back for knife storage. Additional pockets and accessories, sold separately, can be added for multiple personalized configurations. These include a large Tactic Pack that attaches to the back of the vest and can hold a variety of bulky items, as well as the Kokatat Hydrapak hydration system—a plastic reservoir and drinking tube that holds 1.5 liters of fluid.
Other features of the Poseidon we like included its comfortable neoprene shoulder straps, reflective shoulder patches, rugged Cordura outer shell and large, corrosion-proof zipper.
For comfort, fit, and mobility, the Poseidon features articulated shell and foam panels, 8 front and center webbing adjustments and wide, contoured neoprene shoulder straps.