Osprey Hydraulics Soft Flask

Yes, the soft-sided construction is designed to collapse as the liquid level drops. This effectively eliminates the sloshing sound and movement you get with rigid bottles, keeping your pack stable while you run.

While it is specifically optimized for Osprey vestpacks and handheld systems, the standard shape fits most hydration vest pockets. However, we recommend checking the dimensions of your specific vest's sleeve to ensure a secure fit.

Because the opening is relatively narrow, we recommend using a bottle brush and warm, soapy water. Always rinse thoroughly and allow it to air dry completely upside down to prevent moisture buildup inside.

The high-flow bite valve is designed for quick, one-handed operation. You simply bite down and sip, allowing you to hydrate without breaking your stride or fumbling with caps.

Absolutely. The flask is constructed from BPA-free materials, ensuring your water remains free from harmful chemicals and plastic aftertastes, even during long-distance efforts.