Engineered for seamless in-motion hydration, the extended straw cap pairs with the 17oz Oval Flask to deliver high-flow, hands-free drinking. The flexible straw routes easily for optimal positioning, while the self-sealing bite valve prevents leaks. A streamlined cap design maintains a low-profile fit within vest pockets.

*Straw-Cap only fits on NATHAN x HydraPak 17oz Oval Soft Flasks