EISPIRATEN

Does anyone use collapsible or foldable bottles? I've been using the Hydrapak Stash for the last month, at home, work, the gym and on the trail. So far I have been impressed.


Gear Review: Hydrapak Stash Collapsible Bottle

For those that do use this type of bottle, do you ever mix electrolyte replacement drinks in them?

I don't put any mixers into my Camelback because it never seemed to clean out very well - stains and a small but noticeable smell from the powders. Seems like this bottle might be the same kind of plastic.
I used to carry 35mm film containers with Gatorade powder, that plus a 500ml water bottle was a good combination. For spares, I still carry the cheap and very light water bottles.