I've never tried running with a vest before either. I usually don't carry water at all but I almost never go over an hour. I imagine it would annoy me if the flasks were swinging around at all.
I very much prefer the front pocket vest to the backpack reservoir when running, it sloshes around a lot less. I also put about 1/8 tsp salt in each of the 500ml flasks for a little bit of electrolytes to prevent cramping on long runs.
You shouldn't have any sloshing if you suck all the air out. I'm mentioning this because to my surprise, a lot of people, even experienced runners do not realize that iscan option, and were used to running with their water sloshing around as they run. :)
I've never tried running with a vest before either. I usually don't carry water at all but I almost never go over an hour. I imagine it would annoy me if the flasks were swinging around at all.
It feels like the front pockets on the vest are securing the two soft flasks pretty well. There doesn't seem to be any swinging at all.
I very much prefer the front pocket vest to the backpack reservoir when running, it sloshes around a lot less. I also put about 1/8 tsp salt in each of the 500ml flasks for a little bit of electrolytes to prevent cramping on long runs.
You shouldn't have any sloshing if you suck all the air out. I'm mentioning this because to my surprise, a lot of people, even experienced runners do not realize that iscan option, and were used to running with their water sloshing around as they run. :)