Amywrote a review of Hydro Flask 12oz Wide Mouth Water Bottle on December 27, 2016
Familiarity: I've used it several times
If you're on the fence on purchasing this bottle, don't be. It keeps my coffee hot for 6-7 hours whether the lid is closed or flipped open. I don't use this hydroflask often for cold drinks, but when I did, the beverage stayed ice cold for at least a day.