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 129 reviews
  • 5 Stars
    121 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
129 Reviews
Reviewed by Chris T., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Very Comfortable
  • No Bounce
  • Compact
  • No Chaffing
  • Easy Access
I use it for
  • Mountain Biking
  • Trail Running
Rated 5 out of 5
Review posted

Endurance Pack V2.0 review

Used the pack for the first time on a gravel century ride -- VERY comfortable and no issues whatsoever, didn't even feel like I was carrying a pack as it felt so natural. I highly recommend this product!

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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 C., from United States
Verified Buyer
I recommend this product
Product Standouts
  • High Quality
  • Very Comfortable
  • No Bounce
  • Easy Access
I use it for
  • Trail Running
  • Marathon
  • Road Running
Rated 5 out of 5
Review posted

Great pack!

Everything you want in a pack for long runs.

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Times Used
Rated 4 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
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Reviewed by Eric S., from United States
Verified Buyer
I recommend this product
Product Standouts
  • High Quality
  • Very Comfortable
  • No Bounce
  • No Chaffing
  • Compact
I use it for
  • Trail Running
  • Ultrarunning
Rated 5 out of 5
Review posted

Great product

This is my second vest from Orange mud. I like how the weight of vest sets high on my shoulders, with no swing while running. There is a learning curve on fit but locks in tight without feeling constrained once you figure out adjustment.

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Times Used
Rated 3 out of 5
Quality
Rated 5 out of 5
Function
Rated 4 out of 5
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Reviewed by Anthony F., from United States
Verified Buyer
I recommend this product
Product Standouts
  • No Bounce
  • Compact
  • No Chaffing
  • Easy Access
  • Very Comfortable
I use it for
  • Trail Running
  • Mountain Biking
  • Road Running
Rated 5 out of 5
Review posted

What I wanted

The pack was exactly what I wanted. It fit great, didn’t move around a lot when wearing, and held everything I wanted it to.

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Times Used
Rated 4 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
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Reviewed by Kelly B., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Easy to Wash
  • High Quality
  • Very Comfortable
  • No Chaffing
  • Compact
I use it for
  • Mountain Biking
Rated 5 out of 5
Review posted

Comfortable hydration pack

I’ve used my endurance 2.0 hydration pack now three times.

The “good stuff”:

1) When first putting it on after filling up the hydration bladder to the literal max it feels a little awkward initially, like a round bag of water on your back! But once I start riding and after taking a few sips out of it, it seamlessly settles itself on my back and I never notice it after that. It is super comfortable and secure. As I empty the bladder during my ride I can easily cinch the side adjustments down while riding to keep it nice and tight around my torso.

2) The other thing I’ve noticed is that I never feel hot while wearing it. I rode in 95° weather the other day and although I was sweating a lot like I usually do I never felt like the heat was trapped on my body.

3) I also really appreciate and love the fact that it sits high on the back and I can still use & access my cycling jersey pockets.

The “not bad, but good to know”:

1) As a female with a small torso and bust I have a lot of excess side strapping that either hangs down by my side or flaps in the wind. So I have to tuck those straps under the chest straps to keep them from flapping around. I may end up cutting and re-sewing the ends shorter if I get up the nerve to try it. But this in no way takes away from the functionality and comfort of this hydration pack!

2) if you fill up the hydration bladder completely full, which I usually do because I drink a lot of water, it doesn’t leave much room to put extra items in the…

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Times Used
Rated 3 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
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