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Ultimate Direction
SJ Ultra 3.0 8L Hydration Vest

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A vest is best.

When ultra-runner Scott Jurek set out on his record setting 43-day Appalachian Trail run, he relied on the Ultimate Direction SJ Ultra 3.0 Hydration vest to carry all the water and calories he needed along the way. Inherently stable, the vest design eliminates bounce, and it holds water bottles in the front of the pack for easy access and accommodates a reservoir in the back for endurance runs. Bombproof, featherweight, and flexible mono mesh fabric along the inside of the vest keeps everything together in a lean, low-profile package for a minimalist fit and feel. A total volume of about 518 cubic inches means you can take along a light layer, gels, or extra hydration on your epic outings.


  • Flexible knit mono mesh harness
  • Wide lateral strap
  • T-hook adjustable sternum straps
  • Two bottle holsters
  • Two soft flasks included (16.9oz)
  • Reservoir-compatible back pouch
  • Trekking pole straps
  • Phone compatible pockets
  • Item #ULD000Y
mono mesh, Power Mesh, SilNylon
8L (518cu in)
Waist Belt
Hydration Compatible
Reservoir Included
yes, 2 16.9oz bottles
1 phone, 1 back
Trekking Pole Carry
15.75 x 11.42 x 5.12 in
Claimed Weight
[without bottles] 7.1 oz, [with bottles] 9.6 oz
Recommended Use
Manufacturer Warranty