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Osprey Packs
Duro 1.5L Backpack

4.5 out of 5 stars
2 Reviews

Out of Stock

Don't worry though, we have a lot more Hydration Packs in stock than that.

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Why We Like The Duro 1.5L Backpack

The Duro 1.5L Backpack is our choice of storage for sprinting up steep scrambles and dancing meticulously across jagged mountain top spines. One thing we often worry about on long, arduous runs is having the breathability and ventilation required to keep us regulated. Thanks to its almost-perforated Spacermesh 3D fabric, we get just that. The second most noteworthy feature of this distance running vest is its endless storage options: Osprey installed it with a whopping 8 pockets to pack tight all our trail essentials.


  • Tight-knit running vest to go the distance with
  • Ventilated Spacermesh fabric lets your body breath
  • Ergonomic torso fit cinches close to prevent bouncing
  • Adjustable chest straps let you fine-tune the fit
  • Reservoir and soft flask sleeves keep hydration close
  • Multiple easy-access pockets carry items close
  • Includes a 1.5L reservoir
  • Item #OSPZ1D7
Responsible Collection
Bluesign Approved, Recycled/Repurposed
100% recycled nylon
1.5L (91cu in)
3D Spacermesh
Hydration Compatible
Reservoir Included
front, back
2 large stretch water bottle, 2 lower stretch harness, 2 open stretch side panel, 1 vertical zippered harness slash, 1 stretch front
Ice Axe Carry
Trekking Pole Carry
[dimensions] (small) 11 x 17 x 5in, (medium) 13 x 17 x 5in, (large) 15 x 17 x 5in, [fit range] (small) 29.5 - 35in, (medium) 35 - 41in, (large) 41 - 47in
Claimed Weight
[small] 13.2oz, [medium] 14oz, [large] 14.8oz
running, training
Manufacturer Warranty

Overall Rating

4.5 based on 2 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 1 reviews
5 Stars - 1 reviews

Fits Slightly Large

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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5 out of 5 stars

May 14, 2024

Great size and comfortable

I've put it through the wringer
Size Bought:

I’ve been wearing this hydration backpack for about three months now as I’ve been training for a marathon. It is very adjustable and has pockets that hold my phone and snacks. Highly recommend

4 out of 5 stars

August 4, 2022

Seems like a great bag - Fits large

I returned this product before using it
Size Bought:
6' 2"

Looks like an awesome bag but be aware that it fits big. I'm 6'2" and 200 lbs and the large was way too big. Shoulder straps touching in middle of chest when tightened appropriately. Will likely order another in the medium size

Douglas P