Water bottles by Italian company You Bottles, in collaboration with street artist Banksy, are displayed at the Ambiente homewares trade fair in Frankfurt, Germany in Feb. 2025. (Kim Cook via AP) ...

This gravity-defying water bottle promotes healthy hydration and is made from high-quality recyclable stainless steel.

GRAYL GeoPress Water Purifier Bottle, CNET's best budget water bottle: $100 at Amazon Apparently, the eight-by-eight rule came out of a void, because there's no scientific evidence to back it up.