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Altitude plus exertion equals dehydration. But lugging a metal or plastic bottle up the hill is a hassle. And disposable water bottles aren’t the answer—up to 60 million a day end up in landfills. The new Vapur Anti-Bottle ($9) is a nice solution. The reusable bottle stands upright when full and can be folded away in your pocket when empty. Made from BPA-free plastic, it’s super lightweight, freezable, dishwasher safe and holds 16 ounces. vapur.us