Nathan (2) 10oz Flask Waist Pack- This was my first attempt at carrying fuel on a run. This is an okay option but not my favorite. The 2 small flask system totaling 20oz is not as convenient as the single 22oz bottle. The flask holsters are not as in & out friendly as the single bottle cradle system and the flasks don't stay cold as long. The pouch with its multiple compartments holds alot of stuff and that's a BIG plus in my book. The pack does bounce around a bit contrary to the web sites description.
Ultimate Direction offers 3 new packs in November.
I noticed Anton (Tony) Krupicka posted about this on Facebook and had to go check it out because I just bought a hydration pack a month ago. I bought an UltrAspire Fastpack. If you click on the link you will notice the Fastpack is one of the largest packs in the UltrAspire catalog whereas most people are wanting a very light minimal pack for race day like the ones Anton is promoting. I'm not anticipating wearing any backpack any time soon in a race. I wore mine for the Coastal 50k and it was overkill. I had mini-maps and aid stations marked on elevation charts, gels, sports beans, MetRx Bars, band-aids for blisters, creams for chafing, a small compass & tiny flashlight. I carried my smart phone for tunes and the little magnetic sweat proof pocket had Salt Caps in it. Basically everything you would need if you were out for a long desolate training run with enough room leftover to carry multi-day camping gear. This pack is not specific to running. It's made for "fastpacking" for multiple days.
