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 139 reviews
  • 5 Stars
    131 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
139 Reviews
Reviewed by kenneth K., from United States
Verified Buyer
I recommend this product
Product Standouts
  • No Bounce
  • Very Comfortable
  • High Quality
  • Compact
I use it for
  • Mountain Biking
Rated 5 out of 5
Review posted

Great Pack and great capacity for H20

I went to orange mud because of the capability to have a vest style pack but hold 2L of water, I was surprised when it was actually smaller than a competitors 1.5L vest. Not a lot of room for other storage but this is mainly for holding water and not packing up so I did not mind that. It is also very comfortable, when filled to the max with water you will feel a small bulge in your back but after a few sips that goes away and you barely know that you have the pack on. I have used this for 24 hour mtb/bikepacking rides and never had a regret that I was wearing it!

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Times Used
Rated 2 out of 5
Quality
Rated 5 out of 5
Function
Rated 4 out of 5
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Reviewed by Jeff E., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Very Comfortable
  • No Bounce
  • Compact
  • No Chaffing
  • Easy Access
I use it for
  • Trail Running
  • Triathlon
  • Road Running
Rated 5 out of 5
Review posted

Great Pack!

Was in the market for a hydration vest due to training for an Ironman Triathlon. Several on my tri team recommended I check out Orange Mud and I am so glad I did. I have used the vest about a half a dozen times already and love it. I wanted a hydration pack that not only held enough hydration and nutrition, but could also carry my phone and not bounce. This pack is all that and more than I could hope for. I bought the Endurance Pack V2.0 and can now carry enough water for a 2 - 3 hour ride plus nutrition. I barely sense the weight, mostly because it fits perfect and doesn’t bounce. With all the pockets, my phone and all my nutrition is easily accessed. This has literally transformed my long runs and I only wished I would have made this investment sooner.

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Times Used
Rated 2 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
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Reviewed by Laura Ennis B., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Very Comfortable
  • No Chaffing
  • Easy Access
  • No Bounce
  • Compact
I use it for
  • Road Running
  • Trail Running
  • Triathlon
Rated 5 out of 5
Review posted

I bought it for the pockets but love it so much more.

I didn't really need a new fluid back pack back (not sure what else to call it without using a brand name) but i wanted one with front pockets. The pockets are great...easily accessed and yet a cinch (literally and figuratively) to secure. Even better was the fit of the pack. Very easy to adjust for comfort but, more importantly, the shoulder straps felt softer than my previous pack and did not chafe my neck. I usually were packs in warm weather when I am sleeveless so the softness was really appreciated.

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Times Used
Rated 2 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
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Reviewed by Steven A., from United States
Verified Reviewer
I recommend this product
Product Standouts
  • No Bounce
  • Very Comfortable
  • No Chaffing
  • Easy Access
I use it for
  • Trail Running
  • Marathon
  • Triathlon
  • Mountain Biking
  • Road Running
Rated 5 out of 5
Review posted

Great for all your needs

I have had this pack for about a month now, and although there are no structured races or events due to virus, I have still been outside doing "solo ventures". This has been a great time to explore what works and how to get the most out of my gear. I have been on long road bike rides, mountain bike adventures, and even long runs (such as the half marathon I finished in pic) the space and pockets hold the necessary hydration as well as snacks in a way that no matter the activity doesn't bounce or shift, but yet still able to get to everything you need to keep going.

Live the adventure of life!

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Times Used
Rated 5 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
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Reviewed by W M., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Easy to Wash
  • No Bounce
  • Compact
  • Very Comfortable
  • Easy Access
I use it for
  • Trail Running
  • Ultrarunning
  • Mountain Biking
  • Triathlon
  • Road Running
Rated 5 out of 5
Review posted

Perfect Form & Function

Did a lot of research before buying my first OM pack and now own three. Great balance of capacity and form that won’t bounce around while you run or feel like you’re wearing a backpack. The extra zipper pouch in V2.0 is perfect for keys and a cellphone. Highly recommend

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Times Used
Rated 5 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
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