Hydrate effortlessly with this 500mL flask, designed for compatibility with vestpacks. A WingStay™ removable stabilizer prevents bounce, while a wide-mouth opening makes it easy to load ice or mix in electrolytes. A high-flow valve, easy-grip twist cap and tapered shape simplify hydration. Crafted with durable TPU and RF-welded seams, and compatible with the UltraFlask Filter Cap (sold separately).
Features
- WingStay removable stabilizer prevents bounce
- Large 42mm opening for quick ice and drink mix loading
- Tapered shape for easy pocket loading
- High-flow, self-sealing bite valve
- Durable TPU- and RF-welded seams
- Easy-to-grip twist cap
Bounce-Free Performance
A WingStay removable stabilizer is included with all Hydraulics 500 mL soft flasks to maintain its shape and prevent the flask from bouncing as you run, even when it's empty.
| VOLUME | 31 IN 3 / 0.5 L | |
| DIMENSIONS | 26H X 9W X 5D CM | |
| WEIGHT | 0.04 KG | |
Launch DateOctober 4, 2026
Days In Market19
VendorOsprey
Variants1