Rockland Helios Thermos - 0.5 L

At first glance, this thermos doesn't differ from typical store models. However, it's worth paying attention to the stopper – here, a simple, traditional cork is used instead of the popular 'click-clack' mechanism. From my own experience, I know that those mechanisms often break and start leaking. That's why I recommend this thermos for its simple construction.

After a whole winter season, I can confidently recommend this thermos. The main advantage, which is keeping the temperature, is great – with temperatures from -13 to -3 degrees, the drink remained hot for over 10 hours (even when I drank it regularly during trips). The cap, which I encountered for the first time, has both pros and cons: you don’t need to unscrew it completely, so the heat doesn't escape, but sometimes it’s hard to screw it back on properly. The cup is also very good. I recommend it.

The thermos is solid and performed its task well during a trip at the beginning of January – the walk lasted about 3 hours at a temperature of 2 degrees. At home, I was able to prepare soup and tea without any problems, although the thermos capacity is rather suitable for one person. The workmanship is at a very good level, the surface is pleasant to the touch, the thermos fits well in the hand, and the laser-engraved manufacturer's logo looks aesthetic. The stopper is tight; we will see how it performs over a longer distance. Overall, I recommend the purchase.

It retains heat very well. Coffee prepared in this thermos, after 12 hours in a backpack when it was 5 degrees outside, was still very hot.

The thermos itself is fine, but the cap is a complete failure – it often spills drinks. The thermos was invented at the end of the 19th century, ergonomics have been studied since the mid-19th century, and screws have been known since antiquity. Yet someone combined these elements in such a way that it takes away any desire to drink hot beverages. The cap is uncomfortable to use and hard to screw on; the "cut-out" for pouring causes the drink to spill and you can easily get burned. When the drink cools down a bit, unscrewing the cap is a challenge – the thread doesn't work properly, probably because of the cut-out. This type of cap also appears in products from other brands, so it's worth thoroughly checking the pictures to avoid buying this model.