My initial experience with the product was excellent! I would fill it with hot water in the morning and still find the ice cubes intact in the afternoon. Even hot beverages would remain warm for at least 5 hours. It had zero leaks, which I found fantastic because even with other thermoses, there would still be some leakage, especially when inside a bus.
The only dysfunctional part was the spout, which was very difficult to clean. Even a thin straw couldn't fit inside, resulting in coffee residue being trapped. Additionally, the detachable part from the straw would sometimes fall into the bottle, forcing me to open the thermos and search for it in the hot coffee, making it impossible to take a sip without making a mess and burning my hands. Clearly a drawback, but I thought, for the price of €12 including shipping, it's not a big deal.
However, a week later, the plastic piece on the lid, where the spout touches when closed, came off, leaving a small hole through which the contents would leak if there were any vibrations or if the thermos was filled to the top. So, the leak-proof feature, which was the most important for me, was gone. Now I'm stuck with a thermos that I can't take outside because it risks ruining my bag. The spout is not convenient, and the straw keeps falling off. I now only use it inside the house and unscrew the lid when I want to drink.
If the materials in key areas are replaced with more durable ones, then I would definitely consider buying it again. Until then, I will prefer something maybe more expensive but more reliable!
