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Description

The ultimate pack for ultra-marathons.

Designed to meet the unique demands of ultra-marathon runners, the UltrAspire Omega Hydration Vest provides an ideal combination of storage space, low weight, and a runner-specific harness system. The Compressi-flex suspension stabilizes the load for a bounce-free carry that doesn't restrict your ability to breathe or move freely, and the quick-access reservoir compartment allows you to rapidly refill the bladder mid-race.

  • Durable lightweight materials allow the vest to weigh in at under 12 ounces while providing 500 cubic inches of storage space
  • Vest-style harness evenly distributes the load for optimum comfort while you run
  • Compressi-flex suspension adjustment system stabilizes the load without restricting your ability to move
  • Microfiber mesh vest is highly breathable for warm-weather comfort
  • Included two-liter hydration bladder makes for convenient thirst quenching
  • Quick-access bladder compartment allows you to rapidly refill the reservoir mid-race
  • Easy-grab zipper pulls can be operated with numb hands or while you're wearing gloves
  • Main compartment provides enough space to stow essentials for 100-mile races
  • Stretchy front stash pocket is ideal for a rain jacket or puffy
  • Multiple pockets on the front of the vest provide quick access to energy foods
  • Top zippered pocket keeps valuables like a phone, compass, or camera safely stowed
  • Side pockets can hold energy gel flasks, small water bottles, or collapsed trekking poles
  • Single ice tool loop allows the vest to perform as a summit pack

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Here's what others have to say...

3 5

Great Features, Unique sizing

  • Familiarity: I've used it once or twice and have initial impressions

This is a large capacity hydration vest well suited to long days moving fast in relatively non technical terrain in the mountains. It's made with lightweight materials that feel good and perform well. I really liked the features of this vest and the negative reviews regarding the hydration hose and extra length on the straps are just silly. Cut the straps and run the hose out of the corner of the hydration sleeve (not the main compartment nucklehead), through the shoulder strap opposite the clip and then over to the clip in front of your chest. Done. No issues. Unfortunately, for me, this thing did not fit at all. As soon as I got it loaded up it sagged into my lower back and bounced all over the place unless I strapped it tight. The straps dont hold their position so I was always fiddling with them and they are positioned low on the vest and are not height adjustable. This makes it feel like it's squeezing your rib cage and is constricting. The way this thing rode on me, the pack would sag way down my back and the front straps would ride up. This resulted in a very awkward pulling back feel. I ended up exchanging it for the Nathan Vaporwrap and am really stoked. Nathan has a much higher ride on the back and the chest straps adjust the full length of the chest to dial in fit. I have tried on most of the available options and am most pleased with the fit of the nathan products for my body (big manly chest, big manly shoulders :-) ).

5 5

Dig It

  • Familiarity: I've used it several times

I recently used this pack for an ultra in Europe and was quite pleased with its performance. I had to upgrade to this pack from my Nathan Ultra Endurance pack since the Nathan wasn't large enough for all the _mandatory_ gear (rain pants(!), insulating layers, jacket, emergency blanket, whistle, warm hat/gloves, headlamp, spare batteries, 2 liters water, and 500+ calories food). As would be expected, the fully-loaded pack was relatively heavy but the weight was distributed well, it didn't bounce around, and items were easy to retrieve. Two things about the pack puzzled me when I first rec'd it but after having used it for an ultra, they make sense now:
(1) Unless you fasten a velcro loop around the closure of the bladder, the bladder sits loosely in its own pocket, thus making it easier to remove and fill the bladder (I didn't appreciated this until the race).
(2) The straps used to cinch the pack into place are quite long (seemingly too long for a tall and slender runner) but given how much stuff you can stuff into this pack, you'll need to adjust the tightness to accommodate the changing weight (full or empty bladder?) of the pack as you run.
All in all, a great pack and one I'll certainly use again.

What are the dimensions of the ultraspire...

What are the dimensions of the ultraspire Omega hydration pack?
Will it fit a petite women's torso - 15" comfortably?

Responded on

Hello, thanks for the question!

This one may be a big on the big side for you. I have a slightly longer torso than you and really have a tough time trying to make unisex packs sit comfortably. I have often been unable to cinch the straps down small enough, and the shoulder straps are designed for someone with wider shoulders. That being said, because this one isn't relying upon your hips to carry the weight, you may be able to make it work. If it's at all possible I would suggest ordering this one and trying a women's specific pack as well. You could then just send back the pack that isn't ideal - chat or call in to one of our Gearheads and they can easily set this up for you.