“I carry my tumblers back and forth to play golf. They occasionally tip over in the little sports bag I use to transport things … This tumbler does not lose one drop of liquid!” they share ...

OK, shelling out $35 for a water bottle might seem extreme, but hear me out. About two years ago, my friends got me a Stanley IceFlow Flip Straw Tumbler in a pretty rose quartz hue. (Unlike me ...