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Connor Ball I absolutely love my vesica. It is sturdy so far (300 miles and five weeks in Europe), packs down small, and tastes great. Some will be frustrated by the fact that it is not the easiest to drink from since it is mostly collapsible but I find that you get used to it and it is just fine. Excellent product for the designed purpose of carrying extra water in a collapsible, reusable form which can replace the smartwater bottle for hikers. Cap, string, and bottle seem quite durable.