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Sports hydration solution that shrinks as you drink, keeping weight and bulk to a minimum. Ideal for runners and climbers who need quick, one-handed sips without sloshing, the FITLY Soft Flask folds away into a pocket when empty. Is it a better match than rigid bottles for everyday training and outdoor trips?
⚡ At a Glance
- • Packability: Collapsible 150ml design shrinks as liquid is consumed and tucks into pockets
- • Best for: Distance runners, trail hikers and cyclists needing lightweight, fast-access hydration
- • Not ideal for: Users who require large-capacity bottles for long, unsupported expeditions
Flexible walls collapse to eliminate slosh and improve stability. Lightweight, reusable and freezable for short outings.
No slosh on the move – with shrink-as-you-drink collapsible design
Flexible walls collapse as volume decreases so liquid cannot slosh or bounce, while the body conforms to the hand and torso. The reduced internal movement keeps mass close to the wearer during vigorous activity.
Steadier running and climbing thanks to minimal bounce, making hydration less distracting and more efficient.
Quick, controlled sips – with intelligent bite valve and leak-resistant mouthpiece
Bite valve opens under gentle pressure and the mouthpiece is engineered to resist leaks when released; flow rate is governed by how firmly the soft walls are pressed.
One-handed drinking without drips, suitable for maintaining pace during runs or while cycling.
Packable and low weight – with foldable, BPA- and PVC-free material
Constructed from flexible material confirmed as 100% BPA and PVC free, the body folds flat for storage and can be frozen to serve as a cold source. Reusable construction reduces reliance on single-use bottles.
Slides into pockets or a pack, stays light during long sessions and doubles as a short-term ice pack when frozen.
✨ The 4 Key Reasons for FITLY Soft Flask
- Intelligent bite valve – Enables quick one-handed sips without drips or awkward handling
- Freezable design – Doubles as an ice pack to keep drinks cooler on short outings
- Lightweight construction – Keeps carry weight low for long training sessions and races
- Front-pocket friendly – Stores keys and cards so essentials stay accessible while running
📋 Technical Details at a Glance
- Category: Sports hydration flask
- Capacity: 150ml
- Material: 100% BPA & PVC-free
- Design: Collapsible / folding soft flask
- Mouthpiece: Bite valve with leak-resistant mouthpiece
❓ Frequently Asked Questions
Q: Is the soft flask leakproof?
A: A leak-resistant mouthpiece and intelligent bite valve are specified, and user reviews report leakproof performance during active use.
Q: Can the flask be frozen?
A: Yes, descriptions confirm the flask is freezable and can double as an ice pack for cooler drinks on short outings.
Q: How do you drink from it?
A: To hydrate, softly bite the mouthpiece and press the soft flask; increasing pressure increases flow rate.
🏆 Our Verdict
Perfect for runners, hikers and cyclists who want lightweight, low-bounce hydration. The shrinking design combined with a bite valve and freezable material makes on-the-move drinking simple and practical. Reusable, packable construction delivers sensible long-term value for regular exercisers.
