Brand: HydraPak
Category: Running Water Bottles & Flasks
Recommended by Wendy Torres, Trail Runner, Cyclist, Hiker — Reseda, CA
Highlights: comfortable
The SkyFlask™ Speed 500ml is a revolutionary soft-flask designed for athletes who demand efficiency and comfort during their racing or training sessions. With its innovative thumb loop and adjustable strap, this flask ensures a secure grip and quick hydration on the go. 1. Innovative thumb loop design allows for a secure, energy-efficient grip. 2. Versatile ambidextrous use, suitable for both left and right-handed users. 3. Soft neoprene loop provides a comfortable, chafe-free fit for extended use. 4. Adjustable, sweatproof strap accommodates various hand sizes and stays in place. 5. SpeedFill™ Cap enables quick and easy refills, perfect for on-the-move hydration. 6. Compact design packs down for easy storage and transport. 7. Made from durable materials, ensuring longevity and reliability during intense activities. The SkyFlask™ Speed 500ml is ideal for runners, trail enthusiasts, and athletes engaged in high-intensity training. It performs best in outdoor environments, whether on rugged trails or during competitive races. This product is perfect for both novice and experienced users looking for a lightweight hydration solution that excels in demanding conditions. Its design is particularly beneficial during warm weather or long-distance events where quick access to hydration is crucial.
Price: $33
- Who it's for
- Runners who need on-the-go hydration for hot weather, longer runs, or races with frequent aid stations, especially those skipping a vest in favor of a handheld or belt setup. Multiple hosts own several and use one to two per day in training.
- What people are saying
- Praise is consistent: comfortable in hand, easy to refill via the SpeedFill flip cap at aid stations, and collapses flat for storage when empty. One host flags that the SpeedFill cap can come undone when the flask is stowed in a pack.
- Worth noting
- Compatible with a filter cap, making it usable for backcountry water sourcing. The leaking-cap caveat is the only functional concern raised across all notes.
Frequently asked questions
Who is the SkyFlask™ Speed 500ml for?
Runners who need on-the-go hydration for hot weather, longer runs, or races with frequent aid stations, especially those skipping a vest in favor of a handheld or belt setup. Multiple hosts own several and use one to two per day in training.
What do experts say about the SkyFlask™ Speed 500ml?
Praise is consistent: comfortable in hand, easy to refill via the SpeedFill flip cap at aid stations, and collapses flat for storage when empty. One host flags that the SpeedFill cap can come undone when the flask is stowed in a pack.
What should you know before buying the SkyFlask™ Speed 500ml?
Compatible with a filter cap, making it usable for backcountry water sourcing. The leaking-cap caveat is the only functional concern raised across all notes.
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What other hosts are saying
10 experts recommend the HydraPak SkyFlask™ Speed 500ml.
The handheld option makes this super versatile...you to drink while running without having to retrieve your bottle from your pack! With good planning and a filter, I am usually fine with 1 L total water capacity on most of my trips (two 500 ml soft flasks). One thing to be mindful of if you are storing this in your pack is that the Speedfill cap can come undone!
Recommended in Fastpacking
Shelby Farrell, Athlete. Marketing Professional. Cat Mom.
The SpeedFill cap is a game-changer. No fumbling with twist caps when you’re rushed and wrecked mid-ultra. The handheld strap is simple and dialed. Easy to carry when full, easy to stash when empty.
Recommended in Fuel & Flasks
Klaire Rhodes, Professional Trail/Mountain Runner
I own maybe 6 of these! The best handheld bottle for short runs or races where I opt for a belt over a vest.
Recommended in 10 Products I Actually Use Every Day
Makena Morley, Professional Runner (Roads, Trails...)
two of these will be consumed!
Recommended in Broken Arrow Race List
Only handheld bottle worth using, flip top works great at aid stations, is light enough to stash and forget when empty. The gold standard for bottles.
Recommended in Broken Arrow 2026
Great handheld option to avoid carrying a vest or belt, especially for faster stuff and races with frequent aid stations.
Recommended in Trail stuff
Hayden Tharp, Running/Fitness Enthusiast
If you sweat like me, hydration is top of the list. I love this bottle. Very comfortable, excellent capacity, and it stays cool better than most other brands I’ve tried!
Recommended in Essentials
I use this handheld flask for every run when the weather is hot and on longer runs all year long. It’s very comfortable in the hand and packs down for easy storage once empty
Recommended in 10 Products I Actually Use
Allison Powell, Ultrarunning Coach, Ultrarunning Communnity Leader
Adding the filter cap onto my bottles was easy! A great addition to my backcountry adventures!
Recommended in Tahoe-Yosemite FKT
