The Geigerrig Hydration Engine is the most innovative and versatile bladder tested. With its sleek design and pressurized system, it has (once again) won our Editors' Choice Award. It has a variety of uses that no other bladder tested could even contest. The sleek profile is thin and narrow, which allows compatibility with all sorts of Backpacking Backpacks and Running Packs. The bladder offers you the ability to keep it pressurized or unpressurized with a double chamber - one for air, and one for water. When pressurized, it is the easiest to drink from, doubles as a sun shower and triples as a great way to clean off your dog or dirty sports equipment before throwing it into the car. One of our caveats with this system is that when fully pumped, water sloshes around quite a bit.
With its dishwasher safe technology, this is one of the few bladders that can easily be flipped inside out and cleaned right in the dishwasher! Manual cleaning is easy with a simple brush and all parts are easy to take apart. It is more expensive than most, but considering its many innovations, its worth the price.
It comes in both a 2L and 3L size, yet we recommend the larger size for $49 because it is not much heavier, expensive (only $1 more), or difficult to use. For the best-priced hydration bladder, the CamelBack Crux Reservoir is the highest value product in this review. If you are mostly backpacking or want to travel light, we recommend the packable MSR DromLite and the lightweight HydraPak Shape-Shift Reservoir.