The 450ml Ultraflask is a collapsible sport bottle with a versatile bite valve. Perfect for runners as it's clean, compact and easy to use.
Part of a complete line of ultra-light hydration solutions for every type of runner, the UltraFlask™ is perfect for vest pockets or hand-helds.
Hydrapak's 450ml Ultraflask is perfect for use with running vests and packs. The long tube allows you to access your drink without removing the flask when used in chest/shoulder straps.
The bite valve can also be used without the tube and mounted straight on to the cap for hand held use.
Not only does the flask collapse for storage, it actually collapses as you drink, preventing that annoying sloshing when your on the move.
- Reviewed by Ultralight Outdoor Gear