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If you’re not sure what elastic metal is, you can definitely be forgiven. Keego is the newest water bottle on the market and probably the coolest, made of 99.8% pure titanium with an elastic core, for a metal water bottle that squeezes just like any plastic water bottle – but without the downsides.
There’s definitely no shortage of flexible water bottles and containers out there, but we really like the HydraPak Stow. Available in17-ounce and 1-liter sizes, the Stow is made of flexible thermoplastic polyurethane that is BPA and PVC-free, and flattens, rolls and scrunches up when not in use, so as to take up much less room in your pack once it’s empty. It’s 80% lighter than your average plastic water bottle and twice as convenient.