
They are extra durable and have a screwcap so they don't open in your pack. I couldn't find them at a feasible price point, that is until now! I am going to buy some, I haven't decided how many but I was wondering if anyone else was interested in going in and getting a better deal through economies of scale. Anyway reply or PM me if you are interested.
And yes I know that they are in inflated 2-Liter bottles.