Hydration during a 10k is a delicate balance. You don't want to stop at aid stations, but you also don't want to run dehydrated. The JitR 10k pack typically comes equipped with a 300ml collapsible soft flask. This volume is the "Goldilocks" zone for 10k runners—enough to wash down a gel and wet the mouth, but small enough to fit seamlessly into a chest pocket. As you drink and the flask empties, it shrinks, preventing the sloshing sound and liquid movement that can be annoying during a fast race.
Modern supply chains are judged by their carbon footprint. The JitR 10k pack excels here due to a simple metric: packaging-to-product ratio. JitR 10k pack