Ultimate Direction AK Mountain Vest 3.0

Ultimate Direction AK Mountain Vest 3.0

Price: $149.95
Ultimate Direction AK Mountain Vest 3.0 SM Graph
In Stock: 6+
  • Color: Graph
  • Size: SM
Ultimate Direction AK Mountain Vest 3.0 SM Canyon
In Stock: 6+
  • Color: Canyon
  • Size: SM
Ultimate Direction AK Mountain Vest 3.0 MD Graph
In Stock: 6+
  • Color: Graph
  • Size: MD
Ultimate Direction AK Mountain Vest 3.0 MD Canyon
In Stock: 6+
  • Color: Canyon
  • Size: MD
Ultimate Direction AK Mountain Vest 3.0 LG Graph
In Stock: 6+
  • Color: Graph
  • Size: LG
Ultimate Direction AK Mountain Vest 3.0 LG Canyon
In Stock: 6+
  • Color: Canyon
  • Size: LG


Model Number: 80457416

Designed to handle the distance and changing conditions of rugged trails, the Ultimate Direction AK Mountain Vest 3.0 is the latest result of ultra/adventure runner Anton Krupicka's collaboration with UD. Dual front-riding 500mL (17 oz) soft body bottles comfortably provide quick access to hydration, updated fabrics reduce weight, and sliding front sternum straps with additional side compression straps to let you dial-in the fit. Multiple front and rear pockets offer a total of 11.5 L pack capacity for extra apparel, accessories, gear, and easy access to nutrition.


Rib Cage*
24 - 33" 31 - 40" 36 - 46"

*Important Sizing Note: Measure in inches around bottom of rib cage (click here for detail)


  • 2 included 500 mL (17 oz) soft Body Bottles
  • Dual front bottle holsters with bungees hold bottles secure; also fits 20 & 26 oz Ultimate Direction bottles, phone or camera
  • Vest design distributes load for enhanced stability, comfort and easy access to items in front
  • Adjustable sternum straps slide up and down on rail system for custom fit
  • Wide lateral adjustable strap for stability and easy fit-adjustments
  • Large, rear upper reservoir-compatible pouch; fits up to 2L (70 oz) reservoir (not included)
  • Deal side lateral zipper pockets for nutrition and essentials
  • Lower rear pouch for gear and essentials
  • Unique, front loading on-the-go trekking pole holders
  • Soft and flexible knit mono-mesh harness
  • Phone compatible pockets
  • Emergency whistle included
  • 2 rear ice axe loops
  • Fabrics: Knit Mono Mesh, 180g PowerMesh, 320g Darlington Power Mesh, SilNylon/66
  • Dimensions: 16.1" H x 9.4"W x 4.3"D (41 cm H x 24 cm W x 11 cm D)
  • Weight: 7.1 oz (9.6 oz with bottles)
  • Pack Volume: 11.5 L (702 in³)

Bottle Details

  • 500mL (17 oz) easy-squeeze soft bottle is slim and conforms to your shape while riding in the front pocket of a UD hydration vest
  • Soft bite valve with high flow rate; easy on the teeth
  • Slim and lightweight, fills easily with wide mouth opening
  • BPA, PVC and Phthalate free, will not taint taste
  • Durable Thermoplastic Polyurethane (TPU) construction
  • Meets or exceeds FDA and EC regulations
  • Weight: 1.3 oz

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Customer Reviews

Comments: It deserve a 9/10 great running vest. The first problem was to find the correct fit after that it feels great. The front pockets are incredible the back ones quite complicate but still fine to not carry important things.

From: Andres, Peru

Comments: Best pack I've ever owned. You can rearrange the rear bungee strap to outer edge clips and it cinched pack down so it fits well. Seemed too big until I did that and now perfect size. Tons of cargo space and pockets, comfy fit. Front soft bottles are nice. Wore it pacing at Western States and was perfect.

From: CJ, Camarillo, CA, USA, July 22, 2016

Comments: Ditto on the previous 2 reviews for this product. The sizing is off. I wear a medium in the 2.0 SJ vest. The size medium of the 3.0 AK vest was too big, even with sternum straps tightened. The small was way too small. At 6'00" and 160#, I can't imagine why I couldn't find a size that fits me properly. Too bad. I think UD really dropped the ball. Sounds like a lot of folks can't find the right fit with this one. Good luck......I wanted to like it, I really did. 

From: Mr. Bill, UT, USA. July 6th, 2016

Comments: I had the same exact experience as reviewer Mark. The medium was too big (even with all of the straps cinched down) but the small was way too small. I am average size - 5'10" 160lbs, so I don't know how they missed it. Bummer because the pack is pretty awesome.

From: T.  May 7th 2016

Comments: I really wanted to love this vest, as I've been in love with the SJ 2.0 and the features are quite similar. However the sizing is a bit wonky. I wear a medium in the 2.0 series and they fit perfectly. I ordered a medium in the AK 3.0 and it was just on the cusp of being too large, where the front straps were completely cinched down to where they almost touched, I returned for an exchange for a size small in thinking it would be a perfect fit but it was WAY too small with having the shoulder straps barely come over my armpits to the front. Sent back for return for a medium as I think will be ok loaded with gear/a bladder and might inspire me to do some push-ups to get a decent fit. Other than that though, they pack is pretty legit; great quality, lots of storage options, light-weight and will be great for everyday training and any distance races/ultras.
From: Mark. April 8th 2016