The Syncline bike hydration pack is sized for everyday riding. The 12-liter pack has just the right amount of storage space for essential tools, snacks and layers plus a lumbar reservoir that keeps the load low and stable. Our proven Air Flow backpanel and shoulder strap designs deliver breathable comfort, and a new recycled poly outer is rugged and sustainable. Dakine Syncline 12L Hydration Backpack | Black | Christy Sports