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Osprey Packs
Duro 15L Backpack

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$113.72 - $174.95
Up to 35% off
Color:Blue Sky


Size Chart


Why We Like The Osprey Duro 15L Backpack

Whether we're supporting our own long run or facing long stretches between aid stations at our next ultra, we kit up with the Osprey Duro 15L Backpack. With a 2.5-liter bladder and designated spaces for gels, bars, creams, layers, headlamp, and more, this vest keeps us stocked, while the stretch mesh build hugs our form and the adjustable vest-style harness pulls in our load for a stable, distraction-free carry as we stride up switchbacks, along ridgelines, and down through valleys.


  • Streamlined running vest for chasing triple digit miles
  • 13 - 15L capacity for carrying essentials between aid stations
  • Recycled stretch nylon for eco-friendly airflow and durability
  • Soft mesh harness lining reduces friction and enhances breathability
  • Adjustable sternum straps, hip belt, and side straps for low bounce
  • Padded back, extended hip wings, and gender-specific fit for comfort
  • Included 2.5L reservoir for hands-free sipping while on the move
  • Plethora of pockets for organizing your gear and nutrition
  • Item #OSPZ1G0
Responsible Collection
[face fabric, accent] bluesign® APPROVED, Recycled/Repurposed
[face fabric, accent] recycled nylon stretch mesh, PFC/PFAS-free DWR treatment
[small/medium] 13L (793cu in), [large/x-large] 15L (915cu in)
3D Spacermesh bodywrap, foam back panel
Shoulder Straps
Airmesh, dual snap-in removable sternum straps
Waist Belt
ErgoPull, Airmesh, padded hip wings
Hydration Compatible
yes, direct zipper access, hose routing
Reservoir Included
Hydraulics 2.5L LT
front panel
2 open stretch mesh hip, 2 extra-large zippered hip, 2 extra-large stretch mesh flask shoulder strap, 4 lower stretch mesh shoulder strap, 1 vertical zippered shoulder strap, 1 stretch mesh front
Ice Axe Carry
Trekking Pole Carry
top, sides
[small/medium] 15.35 x 9.84 x 7.87in, [large/x-large] 17.32 X 9.84 X 7.87in
Claimed Weight
[small/medium] 1lb 10.6oz, [large/x-large] 1lb 11.3oz
running, hiking
Manufacturer Warranty

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