The CamelBak FlashFlo Lumbar Pack is a perfect hydration system for cyclists or runners who prefer a waist-mounted bag. Stable, lightweight, and comfortable, the FlashFlo keeps 45oz of water within easy access and has enough room to stash your mp3 player, energy bar, and keys. For running, walking, hiking on and off trail, this system from CamelBak is an excellent choice.
Bottom Line: Stay hydrated with the CamelBak FlashFlo Lumbar Pack.
I really like this pack... It takes a few tries to figure out the best position for comfort and weight distribution (as with most lumbar packs). I am 5-7 140ish and have fouund it to be comfortable even when full. I bought it for use while dirt bike riding, but I use it all of the time (hiking/walking, soccer practice, even at the park with my kids). It has a good amount of storage and it even works to just sling across shoulder when not doing major activity. The only down sides I find (1)pulling out drink tube long enough to get to mouth and then getting it back without having a lot of tube sticking out (2)the straps hang loose when the belt is pulled tight around my waist
I live in Colorado at 9,000 feet where big storms come in FAST in the summer. I always like to carry a rain jacket if I am running for more than an hour. With a full camelbak, this pack does not fit even the most compact jacket. If I run for less than an hour, I usually don't take water. This pack is just not for me. It's not bad, it's just probably better for someone in a hotter climate who always needs to carry water.
The capacity for this device is just right for longer runs 5 to 10 miles.
I'm a little large (6 ft, about 220 lbs.)and need the hydration.
I used it on a Bartram Trail race (8 miles at 3500 ft. elevation) in NC just two weeks ago.
I fumbled with side/cinch straps a little, but eventually figured out how to best use them.
It's a good size, but takes getting used to running with a lumbar pack with that much water volume.
I think this one is best for fitness walkers and day hikers.
It can work for trail runners, but you need to be a decent size (min. 5 ft. 10 in.)and have the strength to carry that much weight (roughly 4 pounds filled) at your center of gravity.
If your smaller than the min., I recommend a smaller volume lumber pack or go with a over the shoulders type hydration pack.