The CamelBak Palos 4 LR Lumbar Pack specializes at crushing cross country loops and shorter singletrack rides where a full sized hydration pack is simply overkill. Considering its minimalist design, the Palos 4 LR Lumbar Pack fits a surprising amount of riding necessities, such as repair tools, spare tubes, energy snacks, and water. In fact, its 2. 5 liter storage capacity and included 1. 5 liter 50 ounce hydration reservoir turn this lumbar pack into an essential item for trail riders looking to maximize speed and minimize overall bulk.