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Osprey Zealot 16 Hydration Pack - 100 fl. oz. - Men's

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For long days on the trails, the Osprey Zealot 16 hydration pack offers mountain-ready features, like full-face helmet and body armor storage, 100 fl. oz. reservoir and a detachable tool roll.

  • Lightweight AirScape™ back panel features ridge-molded foam with channels covered in mesh to allow airflow
  • Contoured shoulder straps feature breathable mesh and perforated foam to enhance breathability and comfort; stretch-mesh pocket and zip media pocket keep items close
  • Wide webbing waistbelt won't wander or wiggle, withstanding wallops while weaving wonderment without want along your waistline
  • Also of note, the waistbelt is removable and the mesh-backed hip wings, which are attached to the pack, feature zip pockets to stash small essentials
  • Main compartment features a clamshell-shape zipper, allowing you to fully access the compartment's contents; internal bungee system helps stabilize and secure items
  • Zippered internal sleeve secures the HydraForm™ 100 fl. oz. reservoir, which features an anatomically shaped plastic sheet between a layer of nylon and the reservoir
  • This design enables the reservoir to conform to your back's shape even when full, resulting in a precise, stable and comfortable fit
  • Quickly attach a helmet with the LidLock™ helmet clip; a bungee on the exterior of the pack allows easy adjustment of the LidLock feature
  • Alternatively, the padded front compression pocket can be used to secure a full-face helmet; body armor can be carried in the side mesh pockets or behind compression pocket
  • Quick-access top zippered pocket is lined with a soft, easy-to-clean heat-embossed fabric that helps keep sunglasses, goggles or other fragile items from getting scratched
  • The Osprey Zealot 16 hydration pack includes a tool roll, which has its own zip pocket at bottom of pack for easy mid-ride access to tools or pump; tool roll can be detached
  • Compression straps let you cinch down loads for jostle-free carrying
  • Reflective hits increase visibility in low light


Item 828405

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Osprey Zealot 16 Hydration Pack - 100 fl. oz. - Men's Specs
Best use
Mountain biking
14 / 16 liter
854 / 976 cubic inches
3 liter
100 fluid ounces
1 lb. 15 oz. / 2 lbs. 2 oz.
0.87 / 0.95 kilogram
<19 / 19+ inches
<33 / 33+ inches
8 + main compartment
20 x 11 x 10.25 inches
Frame type
Gear capacity (L)
Gear capacity (cu. in.)
Liquid capacity (L)
Liquid capacity (fl. oz.)
Weight - metric
Adjustable torso
Fits torso
Fits waist/hips
Pack loading
Number of exterior pockets
Bite valve shut-off switch
Quick disconnect tubing
Wide-mouth opening

Osprey Zealot 16 Hydration Pack - 100 fl. oz. - Men's

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