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Mountain 5.0 Hydration Vest

3.5 out of 5 stars
2 Reviews
Current price: $41.24 Original price: $164.95
75% off
Color:M Dusk


Size Chart


Mountain 5.0 Hydration Vest

For those who want to leave the road far, far behind. Offering durability, storage, and a comfortable lightweight design for extended days filled with rugged terrain and stunning views, this hydration pack will be a reliable partner for runners and speed-hikers alike. You'll have no problem bringing all the gear and hydration you need and staying comfortable while you do so.


  • Hydration pack designed for long runs and hikes in the mountains
  • Included water bottles keep hydration within easy reach
  • Compatible with a 3L reservoir for all-day trail adventures
  • Trekking pole carry system prepares you for hands-free scrambles
  • Easy cinch system adjusts your fit and load in a flash
  • Sliding rail sternum straps allow for easy one-handed use
  • Expansive front storage for small items includes side lat pockets
  • Flexible materials and ergonomic fit provide a super-comfortable fit
  • Item #ULDF015
20D coated nylon, flex mono mesh, micromono mesh, stretch nylon ripstop
12.7L (775cu in)
Shoulder Straps
Hydration Compatible
2 bottle pockets, 3L reservoir
Reservoir Included
2 500ml Body Bottle II
front panel
2 bottle, 2 front stretch, 1 zippered front, 1 zippered rear, 2 side
Trekking Pole Carry
Comfort Cinch 2.0
Claimed Weight
[without bottles] 8oz, [with bottles] 11.5oz
Manufacturer Warranty

Overall Rating

3.5 based on 2 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 1 reviews
5 Stars - 0 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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3 out of 5 stars

September 12, 2022

Expected more, but works

I've used it several times

Webbing snapped and removed itself 4 hours into a hundred mile race, only my 4th long run in this thing. So yep, everything fell out. Had to stop, rethread it and tie it at the break. Quite surprising considering my older UD vest still has the same webbing despite being over a decade old and all the zips being seized up ! So... be warned. Besides that, the pockets all feel a bit small. Annoyingly, have to unpack nearby pockets to get bottles in and vice versa. The fit is on the only real improvement, and a good one. No more neck rash.

Peter P

Originally reviewed on Backcountry.com

4 out of 5 stars

June 17, 2021

Good pack, some details a little off

I've put it through the wringer

I bought this pack as a larger option when I needed to haul changes of clothes or food for a day on top of water, and have for the most part liked it. The material has held up fairly well for how lightweight it is, and I think there is a good mix of zippered pockets for essentials and open pockets for snacks and other quick-access items. The pack has a tendency to move around a little bit and ride up in the front, but I have gone out on a 10-15 miler with no shirt on under and experienced minimal chafing which looking back was kind of a shocker. I also don't love how the chest bottles fit; the cinch is right at the level where the top of the bottle will flop around after a sip or two, and it bunches weird if you push it below the cinch. All in all this is a decent pack and I have trusted it to carry my essentials on some 24-hour pushes, but those little details can get kind of annoying on little rest and many miles.

Kai B

Originally reviewed on Backcountry.com