As we all know, drinking water is good for you. Drinking water from plastic bottles, on the other hand, is bad, bad, bad—for you, because toxins can leach from the plastic into the water, and for the planet, because billions of plastic bottles accumulate in landfills every year. So what’s good—for both you and mother earth? The answer is a re-usable metal bottle like this one by S’well.

Made of the highest quality stainless steel, this sleek 17 oz bottle is designed to keep cold beverages cold and hot beverages hot—for hours. The mouth of the bottle is big enough to slip a few ice cubes into, but not so big that you’ll get drenched every time you take a sip. And because it’s insulated, there’s no wet condensation on the outside. It also fits into car and stroller cup holders, is non-leaching, easy to clean, toxin-free, practically impossible to break, and available in four fabulous colors.

It gets even better: S’well donates 10 percent of net sales to WaterAid, a non-profit organization that provides access to safe drinking water in the world’s poorest areas. At the moment, about one sixth of the world’s population—that’s one billion people—don’t have access to potable water.

In some communities, women and children walk for hours every day to search for water, only to resort to polluted rivers or unscrupulous dealers. Since it was founded 30 years ago, WaterAid has brought safe drinking water to more than 14 million people. With each S’well bottle sold, that number will go up. Which goes to show that drinking water can be good not only for you, but for others, too.