These exclusive Owala bottles always fly off the shelves, and one fan-favorite design just made its long-awaited return.

The Wondery Outdoors bottle also comes with a variety of stickers to place on the bottle ... “I've flown with water bottles in the past that have leaked due to the changing cabin pressure ...

What horrors grow within? Credit: Eyeem / Getty Images It takes a lot of grime for a reusable water bottle to look dirty. After all, it's usually just water in there. Bad news, though: If you're ...