Osprey Hydraulics 360ml Soft Flask Water Bottle – Lightweight Trail Hydration

Hydraulics: Lightweight, Durable Hydration for Trail Runners

When a little hydration goes a long way, the Osprey Hydraulics 360ml soft flask delivers a feather-light feel, rugged durability, and a packable shape that tucks neatly into your kit. With a practical 360ml capacity, this flexible flask offers a reliable sip during long runs, quick climbs, or day-long adventures. It is designed to work seamlessly with Duro® | Dyna series vestpacks and handheld systems, providing a streamlined hydration option that minimizes bulk without sacrificing access.

The soft flask concept adapts to your gear, bending to the contours of your pack or vest pocket so you can stay focused on the pace, not on bottle management. The result is a hydration companion that feels light in hand yet resilient when the trail gets rugged. Whether you’re aiming for a new FKT, chasing a personal record, or simply enjoying a fast-paced day outdoors, this bottle supports steady sips without slowing you down.

Key benefits at a glance

• Add-on or aid replacement for vestpack harness pockets or handheld systems
• Vest-pack fit provides bounce-free stability and comfort, helping you stay focused on the trail
• All parts BPA-free, phthalate-free, lead-free, guaranteed
• All materials are certified food safe according to FDA and EU regulations

Practical use cases

• Trail running and ultrarunning sessions where lightweight hydration matters
• Aid stations with quick, accessible refills without removing your vestpack
• Hip belt or handheld configurations for fast sips during climbs or intervals
• Compact, non-bulky hydration for fast descents and technical terrain

Materials and safety notes are focused on reliable everyday use: BPA-free construction, phthalate-free materials, lead-free components, and FDA/EU food-safe certification. The Hydraulics 360ml flask is built to handle regular activity and varying weather conditions, offering a practical hydration option that complements your existing gear rather than adding weight.

What you gain from Hydraulics

Users often appreciate the soft flask’s ability to pack away when not in use, while remaining readily accessible when thirst strikes. The 360ml capacity strikes a balance between frequent refills and carrying enough water for mid-length workouts, making it a versatile choice for many trail routines. While individual results vary, you may notice smoother airflow and reduced bulk compared to traditional rigid bottles, especially during rapid transitions between running and hiking.