This is no water bottle, it's an Anti-Bottle. What does it mean to be an Anti-Bottle? It means reusable, foldable, attachable, freezable, sustainable convenience, all in one easy to grip, streamline bottle. Unlike traditional rigid bottles, it lays flat when empty, and has the ability to be folded and stored where other bottles cannot. It's also BPA free, and super easy to wash. There is no water bottle like it!