At restaurant stops, have your server fill it with fresh hot coffee or ice cold lemonade. Later at your motel, a wayside stop, or a late night campfire....enjoy. A quarter-turn of the removable stopper allows no-drip pouring. You’ll want it along on every ride and use it for other activities too. Unmatched thermal performance. Truly the most civilized way to carry frozen margaritas through Death Valley to remote desert campsites. Performance: Hot water at 203˚ F will be 163˚ F after 6 hours and 116˚ F after 24 hours in a room at 68˚ F..