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Ultimate Direction Wasp Hydration Pack - 540cu in


Item # ULD000R

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Item # ULD000R

Built by runners for runners.

Distance trail runners and adventure racers, your perfect pack has come—the Ultimate Direction Wasp Hydration Pack. This low-profile pack features a vest-like shoulder harness system that's designed for running; it keeps the pack higher on the body to reduce bouncing. The vest design also means you have two roomy front mesh pockets to store your gel bottles and other essentials. The included 70oz reservoir keeps the water coming on hot days, while the mesh construction wicks moisture and helps keep things cool. 

  • Cool Wick Air mesh straps and back
  • 210T nylon ripstop fabric
  • Seamless back panel
  • Rear stretch mesh pocket and bungee
  • Two zippered main compartments
  • Two front stretch mesh pockets
  • 70z reservoir included

Tech Specs

[straps and back] Cool Wick Air mesh, [pocket and bungee] Power Stretch mesh, [pack] 210T nylon ripstop
540 cu in
Hydration Compatible:
Reservoir Included:
yes, 70oz
front panel
2 front mesh, 2 zippered front
Claimed Weight:
16.25 oz
Recommended Use:
trail running
Manufacturer Warranty:

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Are the two stretch mesh pockets on the front of the Ultimate Direction Wasp large enough to hold standard 20oz bottles? Do they have any sort of shock cord to cinch them down so small items don't fall out?

Thank you!

Hi Dave - The stretch pockets will technically each hold a 20-oz hard-sided bottle, but it's a tight fit and they stick up a bit. But I sometimes use mine with the UD Body Bottles (14 oz each) and they seat in there pretty well. There is no closure system on these pockets, but the 2 larger ones below them are both zippered for security

If you really want 40 oz on front, all 3 of the Signature Series vest models (AK Race, SJ Ultra, PB Adventure) can hold 2x20oz bottles, which are included

What does the UD Wasp actually weigh? Is the reservoir included in the 16 oz "claimed weight" or is it just the pack? What is the actual volume? With or without the reservoir? These numbers confuse me!

Best Answer

It weighs 1 pound w/ reservoir

It seems the volume is for the pack with out a full reservoir.

It weighs 1 pound w/ reservoir
It seems the volume is for the pack with out a full reservoir.