We all know the importance of using reusable water bottles (cue footage of plastic bottle-entrenched landfills), but with all the bacteria-trapping, chemical-filled materials out there, it’s not that easy to find one that’s just as safe for you as it is for good old Mother Nature. Enter: KOR . Their super-sleek water “vessels” have been praised by Real Simple, GQ, Martha Stewart, and even Gwyneth Paltrow for their easy-to-carry design and eco- and health-conscious composition. And now, you can get in on the KOR craze for up to half the price when you shop Reserve. Hint: These green accessories make fab gifties — functional, earth-saving, super-chic…what more could you want?