Very good. The screw cap is a bit difficult to open, but of course this also ensures a secure closure (with a similar, very popular product from another company that I had, the cap would sometimes open from the pressure with very hot drinks, which fortunately does not happen here). The taste of the coffee is not altered. I am very satisfied.

Effective but excessively large, even the elongated one doesn't fit in any cup holder of any of my cars

It keeps the temperature stable for at least 24 hours and it is not easy to open, which for me is a positive thing because it means it won't spill and it doesn't lose temperature

Very high quality. And if you screw and snap the lid, it won't come off no matter what.
On the downside, its surface could be less smooth, because it requires quite a bit of force to unscrew the lid, especially when hot water has been added, and there is not a good grip.
The price is a bit steep, despite the quality construction.

Very good thermos. With the lid, it keeps cold hot for several hours! I use it every day for 4 months now. It has fallen 2-3 times but it is a durable construction!

It works. It keeps the cold much better than the 15-euro cups from Coffee Island.
A small minus is that it doesn't fit in cup holders, e.g., in the car.
But it's worth it, I would buy it again.

Edit about a year later. It doesn't care about tumbles or falls, keeps the cold longer than anything I've tried, can be washed in the dishwasher, it doesn't care at all. Excellent.

The best thermos I have used for keeping coffee and waterproofness. The quality is okay, the only downside is its really large size which makes it impractical for transport in the car.

very good. both with hot drinks and with cold ones. especially with the cold ones, it lasts a very long time. I put the freddo espresso like a true Greek and the ice cubes are still there even after 6-7 hours. however, I will give it 4 stars because it doesn't fit in the car cup holder and forces me to put it in the backpack holder

Use cases in closed space, 35°C temperature:

Cold coffee with closed lid + 1 large ice cube inside, survives perfectly for 10+ hours. The ice cube hasn't melted at all.

Cold coffee with open lid + 1 large ice cube. After two and a half hours, it remains cold, although the ice cube has lost some volume, it still exists.

Quality construction, maintains the temperature of the drink, no issues so far, does exactly what it should for the money it costs.

I work outside. I made tea at 4 in the morning, drank it at 10:15, and it was still hot!! The cup was at 4°C. Congratulations to the manufacturers!! I will wait for the heatwaves to see what it will do there and I will let you know

Very good, beautiful, and lightweight thermos. I removed one star because it had a faulty lid. It faded after 4 months because I washed it in the dishwasher.

I use it every day to carry my coffee to work. It doesn't spill inside my bag, it doesn't lose its temperature, and it doesn't retain any odors from any beverage. Ideal for those who commute and carry it in their bag.