Its bonus pill-saving feature aside, this bottle has all the usual makings you’d expect from a modern water bottle: double-insulated walls to keep liquids icy for up to a claimed 24 hours or hot ...

Insulated alternatives, like the Coolflask Gallon Water Bottle ($48) and the Hydro Flask 128 oz. Oasis Water Jug ($116) are on the market, but you'll spend a lot more, and even those cost less ...

This high-tech water bottle does so much more than keep you hydrated—it’s also a speaker and portable charger! Find it on Oprah’s Favorite Things List 2024.

Our hands-on test reveals which stainless steel and plastic insulated water bottles deliver on their promises—and which leave you with lukewarm disappointment.