The Osprey Hydraulics 500ml Soft Flask is designed for runners who need reliable hydration without the bounce. This collapsible flask fits seamlessly into vestpacks, featuring a WingStay removable stabilizer that prevents folding and bouncing, even when empty. Its wide-mouth opening makes it easy to add ice or mix electrolytes, while the high-flow, self-sealing bite valve ensures effortless hydration on the move.
The WingStay stabilizer adds structure, keeping the flask secure in your vest pocket and reducing movement as you run. It removes quickly for cleaning and is top-rack dishwasher safe. The tapered shape streamlines pocket loading, even mid-stride, while the durable TPU construction with RF-welded seams is built to last.
Easy to Clean and Maintain
With the WingStay removed, the flask opens wide for thorough cleaning. You can hand wash with warm soapy water or place the flask (without the Valve) on the top rack of your dishwasher. The high-flow valve is self-sealing and can be detached for separate cleaning.
Compatible with UltraFlask Filter Cap
This flask is compatible with the UltraFlask Filter Cap (sold separately), allowing you to filter water from natural sources on long trail runs.
Features
WingStay removable stabilizer prevents bounce and folding
42mm wide opening for easy ice and mix loading
Durable TPU with RF-welded seams for long-lasting use
Model: Hydraulics
Weight: 1.4 oz (40 g)
Capacity: 500 ml
Material: TPU with RF-welded seams
Bite Valve: High-flow, self-sealing
Product Type: Soft Flask
Mouth Opening: 42 mm
Dishwasher Safe: Yes (top rack, without valve)
Seller: Summit Haul
MPN: Hydraulics
Product Details
The Hydraulics 500ml isn't just a flask—it's a hydration system that keeps you moving. Its low-profile shape fits even the snuggest vest pockets, and the high-flow valve delivers water without breaking your stride. Clean it in seconds with the wide opening, or pop it in the dishwasher for convenience. Whether you're racing or training, trust the flask that performs as hard as you do.
Frequently Asked Questions
Can I put the Osprey Hydraulics 500ml soft flask in the dishwasher?
Yes, the flask (without the valve) is top-rack dishwasher safe. Remove the WingStay stabilizer and the valve before washing.
How do I remove the WingStay from the Osprey Hydraulics flask?
Simply slide the WingStay out through the opening after removing the cap. It is designed for quick removal and reinstallation.
Is the Osprey Hydraulics 500ml flask leak proof?
The bite valve is self-sealing and designed to prevent leaks, but ensure the cap is securely tightened when not in use.