Use Code TAKE20MAY for 20% Off One Full-Price Item*

Detail Images

  • Ultimate Direction - 3/4 Back
  • Ultimate Direction - 3/4 Front
  • Ultimate Direction - SJ Ultra 3.0 8L Hydration Vest -
  • Ultimate Direction - 3/4 Back -
  • Ultimate Direction - 3/4 Front -

Current Color

  • Ultimate Direction - SJ Ultra 3.0 8L Hydration Vest -

Ultimate Direction SJ Ultra 3.0 8L Hydration Vest

Temporarily Out Of Stock

Don't get too bummed. This item is on the way and will be available for purchase as soon as it rolls into the warehouse.

Can't wait? Consider one of the other Hydration Packs we have in stock.

View Similar Products

10 Reviews


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

Tech Specs

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

Tech Specs

  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

Awesome Vest

    When I used to run with the bladder the water always bounced around. The water bottles on the chest eliminates this issue. I also love the secure fit of the vest. It is lightweight yet can hold enough for some longer outings.

    Great simple vest

    • Familiarity: I've used it once or twice and have initial impressions

    I got his for my husband who has this to share,

    "I wore this pack for a recent 55k in Moab after only wearing for one 6 mile run (I know... I know...). I was a little nervous at first since I wasn't familiar with the pack but it did everything I needed it to do and was so simple! I look forward to spending many miles with it in the future. I think it is great for anything less than about 100k as long as there are aid stations. If you're doing something longer or more remote it might be best to move up to the 11L. One word of caution: I would only use the front pockets (by the soft-flasks) for soft items like gloves and food etc. I had my phone and a bluetooth speaker in mine and they DESTROYED my ribs. They were so sore when I finished. As far as sizing goes, I'm 6'0'' and pretty skinny so I got a small which fits really well. Probably go a size smaller than you think because it's highly adjustable and it seems like most people who complain about discomfort got a size too large."

    Great simple vest

    not bad if you like running with a vest

    • Familiarity: I've used it several times

    this vest has what you want and does what it should. it is light weight and has a bunch of pockets for anything you need to carry. UD has definitely taken all features into consideration for long distance runners.

    Ultimate Direction needs some updates

    • Familiarity: I've used it several times

    I think they need to have their athletes try the vests from other companies and learn from them. Coming from Nathan to this was a move backward. The vest fit me very well, but the diamond shape near the top of the bottles rubbed my chest and the bottles were very hard to keep in place. I tried some different things to keep them from flopping over or sinking in the pockets, but it didn't work well. I like the salomon softflask shape more. They are slimmer and more manageable. And the hard bottle vests I've seen from UD still have round bottles instead of bottles that sit flat against your chest. I want to like UD products, but they are falling behind. Also, the vest rubbed and piled my shirt more than my nathan vest.

    Versatile Race Pack

    • Familiarity: I've put it through the wringer

    My buddy tried a few different vests out and settled on this one for the Wasatch 100. He loved the minimalist, yet functional design and felt it carried the best on his frame. Enough pockets to carry his pill holder and chews and his jacket and layers comfortably fit in the back.

    Versatile Race Pack

    Love the UD packs

    • Familiarity: I've put it through the wringer

    UD makes arguably one of the best group of running packs on the market and caters to all different distances. These packs are durable, fit snug and are designed for the pickiest of runners. I have run for 6+ hours in these packs with no shirt and never had any sort of chafing or any issues. Very easy to clean as you can easily throw them in the washer along with your running clothes. These vests come with soft bottles which are fantastic! Don't be skeptical, just try them out.

    Great Way to Unobtrusively Carry Stuff

    • Familiarity: I've put it through the wringer

    Need to carry stuff while you run? Stuff your stuff into your UD SJ 3.0 vest, and then forget about it until you need it. In the past month I've used the vest for training, racing, and the daily run-commute to and from the office, and found the vest to be exactly what I want it to be: a convenient, unobtrusive, and generally comfortable way to carry things while running.

    The vest's capacity is large enough that I can carry water, a change of clothes, and my lunch when running to the office, yet it's light enough that I don't mind it when running or racing for 5+ hours. Fully loaded, things stay snug enough to forget that I'm carrying a pack, even at race pace.

    I'm generally happy with the soft flasks--though the bonding point between the soft lower and firm upper portions can chafe uncomfortably on the chest when completely filled.

    The mesh material design is great--both for airflow, and for weight. That said, I suggest bagging off in a zip-lock anything you don't want soaked in sweat.

    Sizing: be aware that the vest sizing is measured at the bottom of the rib cage, not around the chest. I have a 38" chest, and should have gotten a size small.

    Could have been so much more...

    • Familiarity: I've used it once or twice and have initial impressions

    I wanted so much to like this pack. I had tried the 2.0 packs and just felt that they were way too stiff and unforgiving, plus I just couldn't adapt to the misery of hard bottles against my body. This pack is super light, breathes really well on hot days, has the right amount of storage, looks great, comes with the awesome soft bottles and for the most part is comfy on. BUT, the sizing is funny. There is lots of adjustment for sure, but I just couldn't find the sweet spot between the M and S. The straps fell perfectly on my shoulder and didn't create any chafing, BUT they just didn't hold the bottles to my chest when they were full so there can be a lot of bounce, especially when you start zipping along or heading downhill. I tired every adjustment and couldn't get things settled, which meant that the entire run I KNEW that I was wearing the pack, which got more and more irritating. The pockets were all super well designed and highly functional. The materials and fabrics had some give and stretch for sure, BUT not nearly enough so when things were cranked down I felt my breathing hindered. And the hydration bladder pocket? Oh my. This was such an afterthought, especially since I've never seen Scott Jurek even use them, the bladder won't stay attached and I've NEVER worn and pack with so much sloshing, bouncing and noise. I would not recommend this pack if you plan to use a bladder. All and all so much going on here, but I still don't see why these packs are so popular. I've moved on to the Salomon packs and yes they are more expensive (although not right now on RW!), but I have never worn a more functional, comfortable pack. No bounce. No noise. Forget I'm wearing it.

    Unanswered Question

    Can you fit 750ml bottles in the front bottle holsters?