The bottle leaked during first use itself!
Very pleased with this excellent, value for money 0.4L flask. I usually drink the contents about 4 hours after filling and they are still very hot. Has a straightforward stopper with groves and nothing to go wrong, unlike the 'push & pour' type which I have found leak after some use. I hardly notice carrying the flask and contents. Bought a second one, in another colour, a few weeks later.
It did indeed keep the coffee hot for hours. After an hour, it was too hot to drink immediatedly....after 5 hours it was just right.
the story told was true. Followed instructions
Nice simple design
Good value basic flask
Purchased this as an alternative to a larger 1 litre version for shorter trips. It was also to replace a similar sized steel flask (bought from Tesco) that had only lasted about 9 months before the spring loaded cap broke. This one has a solid well made cap/stopper with a good seal and good threads to tighten down - No leaks. Pre-warm it first, fill it to the top with no air gap and it will keep drinks warm for a full day. Really well made and won't break. - Get one!
Robust, good stopper, easy to transport
This flask worked well. On a recent expedition the flask Kept fluid hot all day then when refilled and left overnight was still warm in the morning, even though temps outside the tent were below 0 celcius.
worked better than described