Reversible Reservoir II
The intriguing Hydrapak bladder system, named the Reversible Reservoir II is a variant of what rafters and kayakers use for dry bags. I have used dry bags for many years on the river as a kayaker, and they are a great tool and very functional. Of course they were meant to keep water out and not water in! The Hydrapak bladder is a nifty system that uses a plastic slider closure (the “Slide Seal”) for the top of the unit, and it allows easy fillings since the entire top opens wide. The Morro that I tested came with their largest size reservoir, which has a capacity of 100 fl oz/3L. All of the reservoir components (bladder, tube, bite valve) are made with FDA approved BPA Free TPU, which means no Bisphenol A (BPA), within the Thermoplastic Polyurethane (TPU) material.
It can be turned inside out, which is a great feature that makes the cleaning and drying tasks a breeze, and it helps keep the dreaded funk from happening! It has a quick connector which they call Plug N Play that attaches or detaches the drinking hose, so it makes it easy to take the bladder out of the pack for cleaning and filling. Their reservoirs are being used in a few competitor packs, which is a great vouch for their innovation and functionality.
The reservoir compartment is accessed on the upper back side of the pack. The whole arrangement of the compartment seems a bit haphazard to me. The zipper that opens the compartment is just a tad too short in length, so it feels a bit squeezed when working with the reservoir. The reservoirs little attachment clip is a royal pain to un-clip from the packs hanging strap, and I much preferred their original quick connector buckle system from their older versions.