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Item # NAT001C

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Item # NAT001C

Ensuring proper hydration, one race at a time.

Make sure you're properly hydrated on your next trail-excursion or ultra-race with the Moxy Hydration Race Vest from Nathan. This pack features a 3-Way Propulsion Harness that moves independently with you as you run, allowing for more natural stride. The contoured, padded back panel ensures comfort over a long day and long miles. Top U-zipper access lets you easily access the things you need. A rear zippered compartment features an organizational sleeve and key hanger. Shock cord at the back lets you store an extra layer for quick access, and reflective trim enhances safety during low-visibility conditions.

The included 2-liter Hydrapak bladder uses a Slideseal closure for easy filling. The thermoplastic polyurethane is both BPA and PVC free. An omnidirectional bite valve lets you confidently slake your thirst without breaking stride.

  • 3-Way Propulsion Harness
  • Contoured, padded back panel
  • Top U-zipper access
  • Nylon and polyester fabric
  • Hydrapak 2-liter hydration bladder
  • Slideseal bladder closure
  • Thermoplastic polyurethane construction
  • BPA and PVC free
  • Antimicrobial additive
  • Omnidirectional bite valve
  • Zippered bladder pocket
  • Rear zippered compartment with organizational sleeve and key hanger
  • Zippered front accessory pocket
  • Rear shock cord
  • Reflective trim

Tech Specs

80% nylon, 20% polyester
[without bladder] 6L (366cu in), [with bladder] 4L (269cu in)
Shoulder Straps:
3-Way Propulsion Harness
Hydration Compatible:
Reservoir Included:
yes, 2L
1 zippered front, 1 mesh front, 1 front bottle, [internal] 1 stash with key clip
Claimed Weight:
[empty bladder] 9.3 oz
Recommended Use:
Manufacturer Warranty:

Reviews & Community


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Awesome pack, except for the nozzle

  • Familiarity: I've put it through the wringer

I LOVE this pack. My boyfriend bought it for me while I trained for my first marathon. I've used it a TON for running and hiking.
The fit is great for women, and I love that you can store extra water or snacks in it, as well as shed a layer and secure it in the bungees. During long runs I can put my phone in one of the front pockets and play music, since I don't like headphones.
It holds plenty of water too! The only downside I have with this pack is the nozzle. It's not easy to open or close. In fact, it's kind of a pain. Throw in cold weather with cold hands, and it's even worse. I wish Nathan would change this feature.
Otherwise, I love it!

Unanswered Question

what is the best way to wash this?

ultimate running hydration pack

  • Familiarity: I've put it through the wringer

Here's a list of all the things I love about this pack:

- It fits perfectly and (as long as you get all the air out of the bladder) the water doesn't slosh around.
- It has plenty of room to stuff sunblock, body glide, Burt's Bees, etc. (you know, all the essentials for remote long runs).
- There are three pockets up front for easy access to the essentials (I took out the extra water bottle and use the pocket for Gu).
- There is a handy whistle - that luckily I have never needed - in case you get injured.
- The mouth piece locks so you don't accidentally lose half your water in the car before you get to the trail head.
- The loud colors are fun (and safe).

The very short list of reasons why this didn't get a 5 star review:
- If you put too much water in the bladder, it leaks.
- The colors bleed a little. Highly recommend a vinegar bath before first use to minimize this.
801-736-6396 ext. 4756

ultimate running hydration pack

Great pack

  • Familiarity: I've used it several times

I used to run with my mountain bike camelback pack (basically a small daypack), which works great except for two things. 1) it moves around a lot and 2) my daypack have no easy accessible pockets for snacks. As I was looking around for a smaller pack I stumbled across this one and catiecoo's review. I decided to give it a try. It turned out to be a great decision. When it comes to the pack itself I love it! It's light weight, it's comfy (the shoulder straps feels more like a sweater than backpack), it's easy to adjust, it DOESN'T bounce, and it's very roomy for being such small pack.

The only reason I don't give it five stars is for the hydration bladder. The mouth piece feels cheap and the plastic you turn to go from on and off got white stress marks the first time I used it. I don't think it will fall apart or crack, but it did catch me by surprise since this is a fairly expensive pack. The water bladder also make the water taste plasticy and bitter. I have spent a fair amount of time rinsing and gently cleaning the bladder and the bitter taste has been reduced. However, what water I have left after hours on the trail still have that plastic taste. I'm hoping that this will go away eventually. Since this is my first Nathan bag, I have no way of knowing if this is what to expect from their bladders in general, or if mine happens to be the one off.

Great pack

back view

back view

Awesome picture Catiecoo!!!

I selected this image to feature on the Community Hub at the bottom of the homepage! Congrats on being amazingly GOATWORTHY !!

Solid women's pack

  • Familiarity: I've used it several times

Nathan Sports is a runner-specific brand. So as a trail runner, I was pretty excited to try out the Moxy. A big Thank you to and Nathan Sports for hand-selecting me to review it for the benefit of the community.

In terms of running hydration packs, I’ve previously used Salomon’s S-Lab Advanced Skin Set. A few years back, when runner-specific hydration pack first came out, Salomon was really the only choice. So, I’m happy to see that more women-specific choices are out there today.

The fit of the Moxy is spot on! The 3-way harness is no gimmick. There was absolutely no bounce, and no rubbing on the sides with the arm movements due to the slim profile. I loaded the bladder with some water, and was careful to squeeze the air out of the bladder (prior experience using the Salomon tells me that extra air in the bladder produces swishing sound during running). As a result, no annoying noise from the bladder during the run. The hose clips to the sternum strap, so it doesn’t bounce around either. Overall, the pack was secure and I love how it carries on the run - which is to say, I didn’t notice it at all.

The bladder is well designed. One big plus for us OCD’s who like to keep the bladder clean after every run is that the hose detaches from the main body for easy cleaning. The top of the bladder opens all the way, and has a stiff stripe so that a slider slides through to seal it shut. There is a small hang loop inside the pack to keep the bladder from collapsing.

One of my big complaint about a lot of running gear is that it’s never made for toting a smartphone. When I read that Moxy’s front zipper pocket fits an iPhone 6, I was rather skeptical looking at the size. But in fact it does fit an iPhone 6 plus the Apple's slim case, barely. So if you have one of the beefier cases, it might be a real squeeze.

There are 2 compartments in the back. The main one holds the bladder and stuff, and then there is an outside one that is higher. I like how the outside compartment is placed, so that not all bulk is concentrated at the bottom. As a result, I could fit a lot more stuff than what the volume suggests. I put in about 50oz of water, a Patagonia Houdini, some bars, a small first aid kit, small tube of sunscreen in the pack, with plenty of room to spare. The straps are high vis pink.

So, overall I am in love with the pack and rate it 5 stars. But nothing is perfect, and here are some thoughts on potential improvements:
- bladder hose comes out on top of the main compartment. If rains, water can get in easily.
- material may not be water resistant; neither is zipper.
- straps could be a little thinner to reduce weight
- front sternum strap could be higher, and reduce the length so the skinny runners like me can cinch down the sternum strap a bit more.
- like the Salomon pack, I had a sweaty back after the run, but not too bad. But consider I used it when it was 60F out with 50% humidity, I’d imagine I’d have a huge sweaty spot when it’s 80F out. I know this one is hard to improve upon, but I’d lay it out there for manufacturers to consider.

Solid women's pack

I wish I needed a new hydration pack... your review, pics, and video make me want this one!