Stability, breathability, and quick access pockets on the Endurance Pack make it perfect for any endurance event. It features a highly breathable and durable mesh that transfers heat quickly away from your body, yet is still soft on your skin. We balance the use of stretchy materials where needed, but use firm materials where we need to maintain stability of fluids and gear. This pack is excellent for carrying your fluids, plus sized phone, electrolytes, and essentials while running and riding!

Note there are two versions, with the "Trekking Pole Upgrade" and the standard. The Trekking Pole Upgrade version has the hardware to "hold" trekking poles, but poles are not included with this purchase. 

The key to fit, cinch the sides first, not the front, until you feel the pack anchor on your shoulders. Then adjust the front harness as needed so you can breathe during movement.

  • Mountain Bike: Extremely stable on your body across the choppy stuff, and we extended the shoulder area a bit to allow freedom of movement. 4 front pockets allow for quick access of your essentials on the fly.
  • Running: Short runs or as long as you want to go. This hydration pack is loaded with features to take you any distance. 
  • Hiking: The conforming fit and quick access pockets paired with a very breathable frame means hiking bliss.  

Endurance Pack 4L, Version 2.0 Animation from Orange Mud on Vimeo.

Fit: This pack is designed to be friendly with your curves. Just slide the sliders up and down to find the optimal fit and adjust the sides snug. Max chest size is around a 52” chest. If you need bigger let us know and we will add more to them!
Optional Accessories

Pack Details

  • Pack Weight: - 11.4oz
  • Dimensions: 10"W x 13" tall / Volume 6 liters.
  • Bladder: HydraPak 2L (70oz) elite, with quick disconnect and blaster valve. 
  • Compartment 1: Bladder compartment
  • Compartment 2: Main cargo
  • Compartment 3: Zippered elastic pocket with secure key clip.
  • MUDX Technology: Trekking Pole Attachment Option
  • Material details: Our stretch fabric is tough, abrasion resistant, & endurance designed. 
  • Shoulder pocket storage: Phone, gel, nutrition, electrolyte and more, both sides.
  • Front chest pocket storage: 20oz/600ml soft flask capable and trash pockets.
  • Front adjustments: 2 elastic straps on sliders for an optimum fit.
  • Made in Vietnam

Trail Runners Dog review below.

Endurance Pack V2.0 Review

average rating 4.9 out of 5
Based on 114 reviews
  • 5 Stars
    106 Reviews
  • 4 Stars
    7 Reviews
  • 3 Stars
    1 Review
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
99% of reviewers would recommend this product to a friend
Times Used
Rated 3 out of 5
Quality
Rated 4 out of 5
Function
Rated 4 out of 5
Customer photos and videos
114 Reviews
Reviewed by Franny X., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Easy to Wash
  • High Quality
  • Very Comfortable
  • No Bounce
  • Easy Access
I use it for
  • Ultrarunning
  • Marathon
  • Trail Running
Rated 5 out of 5
Review posted

My favorite pack ever!

I love everything about this pack and then some more. I own the single and double barrel hydraquivers and they’re great but this is just the best! I decided to go more serious for my ultra training (i used the double hydraquiver vest for 2 ultras already) and be prepared for less stopping to refill so I bought the endurance pack to be able to carry more liquid thinking that would be the only difference to the double barrel but I was wrong, it’s just super soft and comfortable I feel like it’s part of me, I’ve always said (and some people has commented that to me as well) that my packs are like my wings, helping along the way in my runs not only because they carry my fuel but also because I feel more badass while using them ;). The 2 litter soft flask holds the necessary fuel for my run and the extra pockets serve different purposes from carrying packets of tailwind (my go to energy drink powder) to a taser (a girl can run but just in case) money, tampons (sorry if TMI but I is a girl), body glide and my latest addition a patch kit to help out bikers along the way if needed. And I still have extra space :D if you can’t decide which of all the amazing packs to get this is the one to get, trust me!

Loading...
Times Used
Rated 4 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
Was this helpful?
Reviewed by Dave H., from United States
Verified Buyer
I recommend this product
Product Standouts
  • High Quality
  • No Chaffing
  • Easy Access
  • Very Comfortable
I use it for
  • Trail Running
  • Ultrarunning
Rated 5 out of 5
Review posted

Well Designed, I'm happy with purchase and cost

I've used the Endurance Pack V2.0 on several training runs. It has taken a little time to adjust the side straps for just the right fit but this pack is great. I might change the two elastic straps in the front for something that will hold and not stretch. Some type of adjustable one hand quick release zip tie ? Over all I'm pleased and would purchase it again.

Loading...
Times Used
Rated 2 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
Was this helpful?
Reviewed by Sarah S., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Easy to Wash
  • High Quality
  • Very Comfortable
  • Easy Access
  • No Bounce
I use it for
  • Trail Running
  • Marathon
  • Road Running
  • Ultrarunning
Rated 5 out of 5
Review posted

Great product with or without water :)

I love this to carry water... but, I also take out the bladder for shorter runs & use it simply as a vest, for the pockets/storage.

Loading...
Times Used
Rated 5 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
Was this helpful?
Reviewed by Lesa M., from United States
Verified Buyer
I recommend this product
Product Standouts
  • No Bounce
  • Compact
  • Very Comfortable
  • High Quality
I use it for
  • Trail Running
  • Ultrarunning
  • Marathon
  • Road Running
Rated 5 out of 5
Review posted

This vest is the Bomb-Diggitty

I love bright colors and when I saw this lime green vest from OM I knew I had to purchase it!

I work it for my 50k w absolutely no probs whatsoever. I had a second bladder waiting for me at a drop off and it was super easy to make the switch. The pockets are big enough in front to keep my fuel (potatoes/jerky) and extra soft flask.

I am still playing around w the fit bc it’s rubbing the back of my tops which I don’t care for- I’m hoping it’s just bc I pulled the conch too tight (or maybe not enough).

it’s easy to doff and don.

And did I mention the bright color?!? 😂

If you’re on the fence about purchasing this - buy it!!!

Loading...
Times Used
Rated 5 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
Was this helpful?
Reviewed by Paul H., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Easy to Wash
  • Very Comfortable
  • No Chaffing
  • Easy Access
  • High Quality
I use it for
  • Ultrarunning
  • Triathlon
Rated 5 out of 5
Review posted

First Ultra

It worked great!

Loading...
Times Used
Rated 3 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
Was this helpful?