Enter: The Stanley Quencher H2.0 FlowState™ Tumbler (40 oz) and the Hydro Flask 40 oz Travel Tumbler. These two are the veritable "It Girls" of water bottle culture, so of course, I had to know ...

If you need help deciding which Hydro Flask bottle is the best for you, allow us to lend a hand. We're all too familiar with its drinkware line, including the classic 21-ounce Standard Mouth ...