Brand: HydraPak
Category: Running Water Bottles & Flasks
Recommended by Tyler Sarkisian, Endurance / Strength Athlete + Coach — Salt Lake City, UT
The UltraFlask™ Speed 500ml 2-Pack is designed for athletes seeking a lightweight, flexible hydration solution that fits seamlessly into their gear. With its innovative SpeedFill™ Cap and durable construction, this flask ensures quick refills and reliable performance during any activity. 1. Wide form design allows for easy handling and stability during use. 2. Constructed from lightweight TPU material, ensuring durability without added weight. 3. 3D welded bottom provides enhanced stability and prevents leaks. 4. SpeedFill™ Cap enables rapid refills, perfect for on-the-go hydration. 5. Soft and pliable structure allows for compact packing in most running vests and backpacks. 6. Each flask holds 500ml (17oz), ideal for extended outdoor activities. 7. Designed specifically for trail running, hiking, and other dynamic sports. The UltraFlask™ Speed 500ml 2-Pack is perfect for runners, hikers, and outdoor enthusiasts who require a reliable hydration solution. It excels in various environments, from rugged trails to urban runs, making it suitable for both casual joggers and seasoned athletes. Ideal for warm weather activities, this flask ensures you stay hydrated without the bulk, allowing for a streamlined experience during your adventures.
Price: $31.2 - $39
- Who it's for
- Trail runners and ultramarathon athletes who carry water in vest pockets, especially those running long events or multi-day adventures. Works for both water and electrolyte drinks.
- What people are saying
- Hosts consistently praise the low-slosh feel, secure pocket fit, and easy refueling via the snap/Speedfill cap. One caveat: the Speedfill cap can come undone when stored inside a pack without a filter cap on.
- Worth noting
- Compatible with a long straw and filter-top caps, making it versatile for backcountry use with water filtration. The cap security issue is worth noting for anyone planning to store it loose inside a pack.
Frequently asked questions
Who is the UltraFlask™ Speed 500ml 2-Pack for?
Trail runners and ultramarathon athletes who carry water in vest pockets, especially those running long events or multi-day adventures. Works for both water and electrolyte drinks.
What do experts say about the UltraFlask™ Speed 500ml 2-Pack?
Hosts consistently praise the low-slosh feel, secure pocket fit, and easy refueling via the snap/Speedfill cap. One caveat: the Speedfill cap can come undone when stored inside a pack without a filter cap on.
What should you know before buying the UltraFlask™ Speed 500ml 2-Pack?
Compatible with a long straw and filter-top caps, making it versatile for backcountry use with water filtration. The cap security issue is worth noting for anyone planning to store it loose inside a pack.
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What other hosts are saying
8 experts recommend the HydraPak UltraFlask™ Speed 500ml 2-Pack.
So many flasks, so much water!
Recommended in Cocodona 250
I usually put my filter top on this 500 ml soft flask. With good planning and a filter, I am usually fine with 1 L total water capacity on most of my trips (two 500ml soft flasks). One thing to be mindful of if you are not using the filter cap and are storing this in your pack is that the Speedfill cap can come undone!
Recommended in Fastpacking
Ben Corwin, Hutkeeper and mountain adventurer
Easy to fill and designed to fit a wide variety of pockets, we use these flasks for water and electrolyte drinks alike on long runs. Generally carry two, both up front, but sometimes one is enough if it's not too hot as there is quite a bit of available water on the Leadville 100 course.
Recommended in Teton Crest in a Day
Best soft water bottles for carrying on the trails
Recommended in 10 Products I Actually Use
I use these bottles for every run, race, and adventure! They limit the "slosh" feeling and don't bounce around. The snap bottle really helps with easy re-fueling.
Recommended in 10 Products I Actually Use
the best soft flasks in the game. aid station volunteers are blown away when i roll up with these bad boys
Recommended in Pinhoti 100!
Paired with the long straw
Recommended in Race day Essentials
