I purchased this bottle vest and the bladder-compatible UltraAspire Omega vest and ended up keeping the Omega. While both vests offer much of the same in the way of build quality, materials, and pocket storage, the placement of the Kinetic's water bottles was far too awkward. In addition, I found that the bottom of the bottles pressed against my back in a manner that would drive me crazy during a long-haul run. Sorry Kinetic, I wanted to love your two-bottle design over a hydration bladder.
I gave this three stars because I feel like it's probably an excellent product in practice, it simply has a fit issue that doesn't work for my body.
As a point of reference for the aforementioned fit issue: I'm 5'11 with a medium-to-slender build and a proportional torso.