Worked perfect for about 3 Months lasting 12+ hours of hot coffee.
Now it's down to about 2 Hours of hot drinkable coffee.
Won't be buying another one of these that's for sure

Brought flask 3 months ago, there is a glass or metal sound coming from the walls of flask, explained it was used for boiling water for newborn bottle, was told no idea what it could be send it back at my expense no help at all, reception had no idea what she was taking about
Never buy this product!!!!