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 165 reviews
  • 5 Stars
    152 Reviews
  • 4 Stars
    12 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
165 Reviews
Reviewed by Frank P., from United States
Verified Buyer
I recommend this product
Product Standouts
  • High Quality
  • Very Comfortable
  • No Bounce
  • Compact
  • No Chaffing
I use it for
  • Trail Running
  • Mountain Biking
  • Road Running
Rated 5 out of 5
Review posted

Fits great

didn't really know what to expect but it exceeded all expectations. The fit was great and comfortable.

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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 Lori M., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Easy to Wash
  • Very Comfortable
  • No Bounce
  • Easy Access
I use it for
  • Mountain Biking
Rated 5 out of 5
Review posted

Super comfortable

Love the fit! Grabbing gels and food is so much easier than when I have used other brands of hydration packs. The bladder is also easy to remove, fill, reinsert and clean.

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

Awesome Hydration vest!

Great hydration vest. I love that it's so adjustable and the best part is that it does not bounce like crazy while running. I would recommend this for long runs and for hiking trails.

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Times Used
Rated 1 out of 5
Quality
Rated 5 out of 5
Function
Rated 5 out of 5
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Reviewed by Michael V., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Very Comfortable
  • No Chaffing
  • No Bounce
  • Compact
I use it for
  • Marathon
  • Road Running
Rated 4 out of 5
Review posted

90% great

No chafing had a little bit of issues with the chest straps twisting and loosening on me but other than that this thing is great.

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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 Brenda K., from United States
Verified Buyer
I recommend this product
Product Standouts
  • Very Comfortable
  • Compact
  • High Quality
I use it for
  • Trail Running
Rated 4 out of 5
Review posted

Solid pack

Only have used it once for hiking so far and it my first time having a pack. Comfortable on shoulders but still working on adjusting the fit. The only thing I wish was for the pocket with the key clip to be waterproof for when it rains (which is a lot where I’m at). Interested in trying it without a jacket as my arms get rubbed easily.

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Times Used
Rated 1 out of 5
Quality
Rated 4 out of 5
Function
Rated 4 out of 5
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