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The result of collaboration and feedback from ultra runner Scott Jurek, the updated Ultimate Direction SJ Ultra Vest 2.0 packs dual 20 oz bottles in front for quick access to help keep you hydrated on the trails, updated fabrics for increased durability, and additional side compression straps to let you dial-in the fit. Multiple front and rear pockets offer room for apparel, accessories and easy access to nutrition.

*See the Ultimate Direction SJ Ultra Vest 2.0 video for more info about features and development.


  • Gunmetal/Blue


23 - 33" 31 - 39" 36 - 44"

*Measure in inches around fullest part of chest


  • 2 included 20 oz Bottles with Kicker Valve
  • Dual front bottle holsters with bungees hold bottles secure; also fits 26 oz Ultimate Direction bottles
  • Vest design distributes load for enhanced stability, comfort and easy access to items in front
  • Dual sliding, adjustable sternum straps let you dial fit and keep vest close to your body
  • Dual side lateral adjustment straps to enhance and customize fit
  • Silnylon 66 fabric is lightweight, strong and extremely resistant to moisture and UV
  • Hex Mesh is breathable, strong and lightweight; does not absorb moisture to keep vest light and allows for evaporation
  • Stretch Power Mesh at pockets keeps load compact and items stable
  • Soft Velvetex Banding prevents skin irritation
  • Rear Silnylon pocket fits apparel, gear and accessories
  • Rear zipper pocket for optional 2L hydration reservoir (not included) with top hanging hook and dual side slots to run hose
  • Rear mesh zipper pocket for gloves, warmers or other accessories
  • 4 front hose loops allow you to run reservoir hose left or right, over or under arm
  • Rear exterior bungee cord lets you adjust volume of pack and stashes jacket or lightweight apparel
  • 2 front mesh chest pouches with velcro closure for gels or small accessories; fits small smartphone or camera
  • 2 rear lat side side zipper pockets stash small items
  • 4 mesh pockets on bottle holsters for gels and nutrition
  • 1 small water-resistant front velcro closure pocket under bottle holster for electrolyte caps
  • 1 small front velcro closure mesh pocket under bottle holster for keys or small valuables
  • Safety whistle attached to front via bungee
  • Trekking pole and ice axe loops
  • Hand-washable
  • Torso Length: 12 inches (30 cm)
  • Width: 9 inches (23 cm)
  • Weight: 11 oz (16.5 oz with bottles)
  • Pack Volume: 7L (427 in³)

Bottle Details

  • Unique medical grade silicone Kicker Valve allows for easy drinking that's easy on your teeth
  • To drink, pull up on valve, bite and sip; squeeze bottle to desired flow rate
  • 'Kick' valve to the side using teeth and it automatically returns to leakproof closed position
  • Off-center valve prevents need to tilt bottle straight up
  • Sealed leak-proof twist cap; large opening for easy filling
  • Finger loop makes for easier grab and return
  • Finger grooves improve grip while drinking on-the-run
  • Squeezable bottle is odorless and tasteless
  • BPA free; FDA/NSF approved safe Polyethylene bottle
  • Bottle and cap dishwasher safe on top rack
  • Weight: 2.8 oz (79.4g)

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Customer Reviews

Comments:> 6', 205 Wear a MD/LG in shirts Have a UD PB 1.0 in MD/LG and fits perfectly Chest 42/43 Bottom of Rib Cage 36 According to other reviews, this runs large, my measurements puts me in between a SM and MD. Purchased a MD. Very odd fit. It feels like the loaded bottles are too low on my chest and the straps over the shoulders are too close to my neck. Doesnt feel very form fitting. Chest straps are about 2-3 inches apart leaving a ton of strap leftover to flap around. Loosely tying it off solves the problem. Chest and side adjustments seem to be futile to get a comfortable fit, will take it for a run anyways. First run was a 10 miler. Load was just my key and Houdini in the back zipper pocket. I love the key clip! I only used 1 bottle and kept my phone in the other bottle pocket. I felt like the shoulder strap was rubbing against the left side of my neck, not hard, but noticeably felt uneven. Later in the run, I switched my phone to the zipper pocket, so no load in the right pocket, still felt lopsided. The whole run, I just felt like I had a vest on. This is not the case with other vests that Ive tried(ie. Salomon Ultra Set 3L...great fit, ripped bottle pocket after 5 uses) This vest is supposed to replace that one, in terms of more capacity and durability than the latter, but less than the PB 1.0 Vest. Wanted something, super-light, super comfy and super durable. Enough for front country trail runs from 10 to 20+ miles where I need to at least have my 10 trail essentials, some nutrition and enough water. Test loaded the back pocket with my Puffy Vest and Pullover and Houdini, both bottles. It felt like it fit a lot better, but that is fully packed, which I dont run with often enough to warrant the larger size. Update: Received the SMall. Out of the box, it was snug with room for adjustment and a little higher on the body, which feels like a perfect fit. Took it on a 12 miler with my 10 Trail Essentinals and performed just like it should. I have opted to use the skinny 500ml Salomon Hydro Flask and Ultraspire Formula 250ml Soft Flask in lieu of the included bottles. I will be using the Body Bottles for extra water stashed in the main back pocket for longer runs. Just personal preference. It still feels like I'm wearing a vest, but for now, it is a acceptable tradeoff for durability.
From:Knee-Lo. November 17th 2016

Comments: First, I love this pack. I have taken it on eight runs, all at least 20km. Most have been on trails and over 30k. I am very happy with its performance so far. Getting the fit nailed down took about 10k of the first run, but now there is little to no bounce except on steep descents. The bottles don't bounce much. They are easy to use, I carry water in one and energy drink in the other, so I can switch between them. The bottles make some noise, but it isn't a problem. Do not use the toggles on the bottle holsters unless carrying something other than a bottle. A friend wrecked the toggles by doing this on every run. The side pouches are not quite as big as advertised. They will fit a phone (mine is a Nexus 4) and food. They will not fit a Hammer gel flask (much to my chagrin). It takes a little bit of flexibility to reach the pockets. There are two rear pockets. One is divided to hold a bladder, with shock cords to hold it down. I have carried a bladder on two occasions and the pack is still comfortable and will still fit a jacket. I used the bladder to refill the bottles (which gives a total carrying capacity of over 3 liters/110 oz). There is another pocket that will fit a first aid kit and other flatter basics. All the other little pockets are great for whatever little stuff that you want to carry. I don't think that the shoulder strap pockets will fit a smart phone, though. I haven't used the shock cords, but they have a ton of different routing options. A note on sizing - I sized towards the top of the medium range or the bottom of the large range. I have to cinch my medium down tight to make it fit well, even in a jacket, if it isn't loaded heavily. I am 5'9, 160 to 165 pounds, 38/39 inch chest. I got this pack to replace my old Nathan 020. It is a huge improvement. Lighter. More flexible. My only issue is that I have to put my Hammer gel flasks in the back pockets, as they don't fit in the sides. I highly recommend this pack. It is very comfortable, light and easy to use. It can carry supplies for 2 - 6 hours of running, depending on temperature.
From: Dave, Jerusalem. February 25th 2015