Thermos: Quit wasting your money. Buy a RTIC water bottle and be done!
Its getting faded from every day use but this thing ROCKS! These are discontinued but they came out with a better style. (One I have will leak a little with carbonated water or hot coffee if layed down). The new ones are more straigh-sided.
Guaranteed liquids will be cold 24 hrs later. (Ice barely melts!) I pre-heated the inside with hot water...but 5 hrs later, my coffee was almost to hot to drink.
There is a sale right now... spend 35.00 and free shipping.
The 16 oz just didn't seem big enough for long ventures.