Brand: HydraPak
Category: Running Water Bottles & Flasks
Recommended by Grant Colligan, Pro Mountain Runner — Colorado, USA
Highlights: lightweight, comfortable
The SkyFlask™ Speed 500ml is a lightweight, ergonomic soft-flask designed for athletes who demand efficiency and comfort during their training or racing sessions. With its innovative design and user-friendly features, it ensures quick hydration without compromising performance. 1. Innovative thumb loop design allows for a secure grip without unnecessary strain. 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 with Velcro-style closure accommodates various hand sizes. 5. SpeedFill™ Cap enables rapid refills, perfect for on-the-go hydration. 6. Compact design packs down easily for convenient storage and transport. 7. Made from durable, BPA-free materials ensuring safety and longevity. The SkyFlask™ Speed 500ml is ideal for runners, trail enthusiasts, and athletes engaged in high-intensity training or competitions. It excels in outdoor environments, whether on rugged trails or during urban runs, providing quick access to hydration. This product is perfect for individuals of all skill levels looking to enhance their performance while maintaining comfort and convenience.
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.
Grant Colligan's review
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 by Grant Colligan, Pro 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 Grant Colligan say about the SkyFlask™ Speed 500ml?
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.
Why does Grant Colligan recommend HydraPak?
Grant Colligan recommends the HydraPak SkyFlask™ Speed 500ml for running water bottles & flasks. 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.
Is the SkyFlask™ Speed 500ml a good running water bottles & flask?
Yes — Grant Colligan recommends the SkyFlask™ Speed 500ml by HydraPak as their running water bottles & flasks pick. 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.
More from Grant Colligan's Broken Arrow 2026
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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
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
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
