A refined 3-liter reservoir for your hydration hip pack. If it's time to replace or update your hydration reservoir, look no further than the freshly updated 3-Liter (100-ounce) Lumbar Reservoir 3.0, which fits perfectly with our large mountain bike backpacks. Our tried-and-true Dakine x Hydrapak 3D lumbar reservoir has been further refined for easy use, starting with the improved fold-and-slide wide mouth opening, which makes for easier filling and cleaning. The new lightweight Comet Bite Valve is self-sealing and can be opened and locked with one hand, while the Plug-N-Play quick-disconnect hose makes refills a breeze. The reservoir's molded, 3D bottom provides better shape inside the pack and allows for quicker drying between rides. All of that, along with a lifetime no-leak warranty, means that you'll never be thirsty on a ride.