Bought one as I needed the larger capacity, it lasted a month and was returned by the store for a replacement after waiting 8 weeks to hear from customer service, faulty unit. Second one arrives and after a month same issue, hot on the outside and booing water cold within an hour or two. Like many others thermos says send it back at my expense to have it looked at again. Why would I post a thing my expense.
So now it sits here so I can show friends what not to buy.
Sad experience will put me off anything in this brand again.

Use this when we go out, love my tea, keels hot for almost 1 day, from 9am - 11pm, stylist sleek look keeps hot longer also use to keep hot water for bubs when he was formula fed works really good just a bir pricy but you pay for what you get

Bought the 2lt King Series. Already have 2 1.2lt Work Series Thermos which I love. Filled the 2lt with boiling water at 7am in the morning. Opened it for the first time at lunchtime and coffee was barely luke warm. Could not recommend this to anybody. Will stick with the work series models which keep coffee hot for well over 24 hours and will return the 2lt king series model for a refund.

Bought from big retailer 6 months ago but did not keep the receiptr. Worked well then no longer kept water hot. Outside casing heated up but flask does not keep water hot. Pretty bad for what I paid. No reply from customer service. This is supposed to be a premium product? Don't buy is my recommendation

I used this for my baby milk to keep warm water. The water does not keep warm after 2hrs . First week was good then after 1 month the water keep cooling quickly. Then after the second months the water last for only 1hr warm.
Even if I put the hot water not more than hour.
I don't like the product.

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!!!!

I purchased this bottle in ebay. After 11 months of normal use (only put hot water), it can no longer keep water warm. Outside metal is hot when put hot water in. Very disappointed. Called Thermos regarding warranty and was told I should contact ebay seller. Contacted ebay seller, no response. Not sure if I am just unlucky, but the bottle at this cost should last longer.