So far the perfect collapsible water bottle. I would recommend this for amusement parks, sporting events, hiking or any outdoor activity where you can fill up your bottle with water.

https://myhydaway.com/testimonials/so-far-the-perfect-collapsible-water-bottle-i-would-recommend-this-for-amusement-parks-sporting-events-hiking-or-any-outdoor-activity-where-you-can-fill-up-your-bottle-with-water/