The 500mL Locking Cap Flask from HydraPak is sized for short to medium runs, offering enough capacity without unnecessary bulk. Its locking cap mechanism prevents the nozzle from opening under pressure when stowed in a running belt or vest pocket, keeping gear dry and reducing waste mid-run. The flask is designed to integrate seamlessly with hydration belts and soft-flask-compatible packs.
500mL capacity — suited for short to medium runs
Locking cap prevents nozzle leaks under belt pressure
