Good clean water.

Not all tap water is created equal...in fact, some of it is downright unpleasant to drink. Luckily, this clever to-go bottle is here to save the day: The activated charcoal filter—made from 100% natural coconut shells—slips into the bottom (that’s where you refill the bottle). After filtering, flip it over to drink up and stay hydrated. It all comes apart for easy cleaning, and your filter is good for 30 days (grab a few extras here).