Osprey Duro Pro 10 Running Vest - Cascade Blue, Size L

Long-distance trail runners and endurance athletes often struggle with carrying enough water and gear without being weighed down or chafed. The Osprey Duro Pro 10 solves this by offering a streamlined, bounce-free fit with 10 litres of smartly organised storage and two included soft flasks, so you can stay hydrated and focused on the miles ahead.

Who is it for

This vest is built for serious trail runners, ultra-marathoners, and fastpackers who need reliable hydration and quick access to nutrition, layers, and essentials. Its unisex design and adjustable harness make it suitable for a wide range of body types, while the size Large fits larger torsos comfortably.

Main features

• Vest-wrap harness with dual adjustable chest straps for a secure, personalised fit that moves with you.
• Includes two 500ml Osprey Hydraulics soft flasks, so you can start hydrating immediately.
• Internal sleeve accommodates a 1.5L reservoir (sold separately) for longer outings.
• Stow-on-the-Go trekking pole attachment lets you stash or deploy poles without removing the vest.
• Multiple stretch mesh pockets on the front, sides, and hipbelt keep gels, phone, and layers within easy reach.
• Contact mesh backpanel enhances breathability, reducing sweat build-up on hot climbs.
• Reflective graphics and integrated safety whistle boost visibility and safety in low light or emergencies.

Specifications

• Capacity: 10 litres
• Weight (vest only): 0.35 kg (size L)
• Main material: 320Gr nylon stretch mesh
• Accent material: 200Gr nylon stretch mesh
• Colour: Cascade Blue
• Size: Large (L)
• Gender: Unisex
• Closure type: Zipper, buckle
• Hydration included: 2 x 500ml Osprey Hydraulics soft flasks
• Hydration compatibility: 1.5L reservoir (sold separately)
• Pockets: Dual lower side panel stretch mesh, dual stretch mesh on lower front, dual zippered hipbelt, dual extra-large stretch mesh flask/food, front panel zippered, internal main compartment
• Pole attachment: Stow-on-the-Go
• Safety: Integrated whistle on chest strap
• Reflectivity: Reflective graphics
• Best uses: Trail running, endurance racing, fastpacking

Tips

For optimal comfort, adjust the chest straps so the vest sits snugly without restricting breathing. Fill the soft flasks and place them in the front pockets before putting on the vest to balance the load. If you prefer a reservoir, insert it into the internal sleeve and route the hose through the designated port. After sweaty runs, rinse the vest and flasks with mild soap and air dry to keep them fresh.