Description
Drink. Squeeze. Collapse. Repeat.
When every gram and every centimetre of pack space matters, the RUNGEAR Collapsible Soft Flask delivers. Made from flexible, BPA-free PVC, it collapses flat as you drink — shrinking with your hydration needs so it never takes up more space than it has to. Whether you're racing a trail ultra, summiting a peak, or grinding out a long ride, this flask keeps up without weighing you down.
Why Athletes Choose It
- Collapsible Design — Folds flat as it empties, eliminating dead space and reducing bulk in your pack or vest.
- 300ml & 500ml Options — Choose the right size for your effort. 300ml for fast, light runs; 500ml for longer adventures.
- Bite Valve Straw Cap — Hands-free sipping on the move. No unscrewing, no spills.
- BPA-Free PVC — Free from high-concern chemicals. Safe for everyday training and racing.
- Ultra-Lightweight at 40g — Barely registers in your hand or pack. Pure hydration, zero penalty.
- Squeezable Soft Body — Easy one-handed compression for quick, controlled sips mid-stride.
- Available in Red & Blue — Spot your flask fast in any pack or belt pocket.
How to Use
Fill with water or your preferred sports drink, secure the bite valve cap, and slot into your running vest, belt, or pack. Bite and sip on the move — the flask collapses as you go, keeping your kit tidy and your pace unbroken.
Specifications
- Capacity: 300ml or 500ml (select variant)
- Weight: 40g
- Material: BPA-free PVC
- Cap Type: Bite valve with straw
- Colours: Red, Blue
- Chemical Safety: Free from high-concern chemicals
- Best For: Trail running, marathon racing, hiking, camping, cycling, walking










