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Unlike some of the cooler species, humans were apparently deemed unfit for nature's gift of built-in water storage. Outsmart evolution with the CamelBak Ultra LR Hydration Vest, a super light pack design for all types of running. The Lumbar Antidote reservoir will store two liters of water for up to two hours of high-intensity exercise without fear of dehydration and its nasty effects on your performance. Because it rests on your lower back, the reservoir won't drag down your shoulders or cause unnecessary fatigue. Composed of DWR and PU-coated diamond Clarus, the Ultra LR won't give in to abuse without a fight. When you store some small essential items in the side cargo or overflow stash pocket, the fabric will even protect your stuff against the effects of rain or wind. Cinch up the adjustable waist belt and Air Mesh harness for a breathable, secure fit that won't jostle about behind you when jogging your little heart out. For extra safety, CamelBak fitted the Ultra LR will a whistle and reflective panels, in case you are one to jog the street at night.

Season after season, CamelBak's super scientists have been hard at work refining and perfecting the Antidote reservoir, the industry's most popular solution to hydration. At the turn of a cap (a quarter turn to be exact), you can open or close the reservoir, refilling and securing it again in seconds. Center baffling and a sleek design prevent your water from jostling about inside your pack while running, hiking, or hitting the park. When not off exploring the world, simply disconnect the tube using the Quick Link System and hang up the Antidote for proper drying or storage. Since last year, CamelBak's go-to reservoir system has actually lost some weight, reducing bulk in the fill port and offering you that much more convenience.

  • DWR and PU-coated diamond clarus
  • Two-liter Lumbar Antidote reservoir
  • Center cinch, dual-adjustment waist belt
  • Secure harness
  • Cargo and stash pockets
  • Safety whistle
  • Reflective
  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

Poor fit for running if you ask me

  • Familiarity: I've used it several times

I've been a big fan of Camelbak products in the past, but I thought this one was a dud. I've been happy with the marathoner vest but wanted something with more storage.

In theory it seems like a good idea to get the water weight on your hips, but in practice it didn't work as planned in my experience. I'm only 5'10" 180 lbs but I couldn't for the life of me get the waist strap to stay on my hips, despite trying every which way to get the straps and velcro adjust dialed. After just a few strides it would ride up onto my abdomen. To keep the load stabilized you have to pull the lower strap reasonably tight, but I found it very annoying running with a tight strap across my abdomen. It just isn't comfortable there. And the lumbar portion of the pack was constantly causing my shirt to ride up and chafe the low back. I found myself fiddling constantly with the fit, but I could never get a comfortable fit.

Storage was a little below average for a pack of this size (compared to a comparable Nathan pack for instance). The front mesh pockets were a little small to throw a bottle in as well.

Throw some weight in it and jog around before committing to this pack to make sure the fit works for you. Mine seemed comfortable enough in my living room, but on the trail not so much. But hey, if the fit works for you this could be a perfectly capable pack.

Highly adjustable pack

  • Familiarity: I've put it through the wringer

You can dial in the fit to suit your body and comfort preferences. The belt with pockets is what really clinches it for me, love having easy-to-reach storage on the front of a pack! This vest fit me personally just about perfectly, now if it could only run an ultra for me.