HydraPak UltraFlask Speed

Continuing to lead the pack in soft flask innovation, the wizards at HydraPak pulled out all the stops on the UltraFlask Speed. Designed with a soft material that will fit most hydration vests, belts, or any old backpack, there is no excuse to leave this featherweight flask at home. The shrink-as-you-drink design will keep bouncing to a minimum, collapsing into a cute little ball when it's empty. The Speedfill cap opens quickly to fill with liquids or ice on race day. If you want a flask that does it all, consider getting a HydraPak UltraFlask Speed - or a pair.

• Speedfill cap and large-opening nozzle make refills a cinch.
• High-flow bite valve automatically seals for a leakproof run.
• The shrink-as-you-drink design reduces sloshing and saves space.
• Customizable cap lets you tailor your drinking experience.

2025 Update: The UltraFlask Speed soft flasks no longer come with the "drinking straw."

2026 Update: The UltraFlask Speed has a slightly different printed design, but otherwise remains the same.