Brand: HydraPak
Category: Running Water Bottles & Flasks
Recommended by Klaire Rhodes, Professional Trail/Mountain Runner — Alaska
Highlights: comfortable
The SkyFlask™ Speed 500ml is a lightweight, ergonomic soft-flask designed for athletes who demand convenience and efficiency during their training and racing. With its innovative design and user-friendly features, it ensures hydration is always within reach without compromising performance. 1. Innovative thumb loop design allows for a secure grip without unnecessary effort. 2. Versatile ambidextrous use, easily held in either hand for maximum comfort. 3. Soft neoprene loop provides a chafe-free fit, enhancing comfort during extended use. 4. Adjustable, sweatproof strap accommodates various hand sizes and stays securely in place. 5. SpeedFill™ Cap enables quick and easy refills, perfect for on-the-go hydration. 6. Compact design packs down for easy storage when not in use, making it travel-friendly. 7. Constructed from durable materials, ensuring longevity and reliability in all conditions. The SkyFlask™ Speed 500ml is ideal for runners, hikers, and outdoor enthusiasts looking to stay hydrated during intense activities. It performs best in dynamic environments such as trails, marathons, and training sessions, catering to both novice and experienced athletes. This soft-flask excels in warm weather conditions, providing quick access to hydration without the bulk of traditional bottles, making it a perfect companion for summer races and long-distance runs.
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.
Klaire Rhodes's review
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 by Klaire Rhodes, Professional Trail/Mountain Runner
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.
What does Klaire Rhodes say about the SkyFlask™ Speed 500ml?
I own maybe 6 of these! The best handheld bottle for short runs or races where I opt for a belt over a vest.
Why does Klaire Rhodes recommend HydraPak?
Klaire Rhodes recommends the HydraPak SkyFlask™ Speed 500ml for running water bottles & flasks. I own maybe 6 of these! The best handheld bottle for short runs or races where I opt for a belt over a vest.
Is the SkyFlask™ Speed 500ml a good running water bottles & flask?
Yes — Klaire Rhodes recommends the SkyFlask™ Speed 500ml by HydraPak as their running water bottles & flasks pick. I own maybe 6 of these! The best handheld bottle for short runs or races where I opt for a belt over a vest.
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View Klaire Rhodes's expert gear recommendations on Rendezvu
What other hosts are saying
9 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
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
