By now, you have most likely been socially shamed out of using plastic, single-use water bottles. That's good! Let's save the planet! So turn to these 10 reusable water bottles, the best on the market—from stainless steel to BPA-free plastic options—to keep your hydration in check. Many of these companies have made commitments to protecting clean water and promoting water security around the world, which is cool, too. And use them often; if you think you're drinking enough water every day, you're wrong.