Esbit Vacuum Flask 1 l - Olive Green

Great, durable and spacious thermos. It's a bit wide, so you need to allow space for it in your backpack, but it works excellently and keeps the temperature for a very long time.

I bought the thermos on 17th October 2025 at 16:49, and the delivery arrived already on 18th October at 7:04 – amazing, congratulations. The thermos itself keeps heat for a very long time – even after 23 hours the drink was hot. I recommend both the MILITARIA.PL shop and the ESBIT 1L thermos.

I chose the Esbit brand because I've been using their thermos for almost a decade and I know it's reliable. Now I can have both tea and coffee at hand at the same time. I'm glad they still maintain high quality, offering two cups and two different caps.

The thermos keeps temperature excellently – even after 12 hours the drink stays hot, and after 24 hours it’s still warm and can still warm you up. It was tested in tough conditions like strong wind, heavy rain and about 10°C. My only complaint is about the coating – although it feels nice to the touch, the paint wears off easily. After one use while fishing, when the thermos was knocked over and rolled a few times, it got quite scratched and silver marks appeared. I rate it 4 stars for keeping heat, I subtract one for the poor durability of the paint.

This is the best flask I've had so far. It retains temperature for a whole day, even in very tough conditions. It also works perfectly in summer, when I use it to store ice cubes – they don't melt for several hours, even in strong sunlight.

It doesn't leak, keeps temperature for a very long time, is comfortable and light. Two cups are a plus, though one tends to fall out while opening. Two different stoppers are a great option as well. I recommend both the product and the shop—I've bought again already.

Esbit as always is reliable. Excellent at cooling in summer, great at keeping drinks hot in winter. The rough surface prevents light reflections, which is important for discretion. Very solid construction. Simple, sturdy, and dependable. The additional cup is a big advantage. The only downside is the size, but it's hard to expect a smaller dimension with this capacity—always a trade-off.

The thermos retains heat very well and is solidly made. Ideal capacity, two cups very useful. Covered with a coating so it doesn't slip from your hand.

Product matches the description, express delivery and good quality. Fully meets my requirements and looks very good. It really does keep heat for a long time (minimum 12 hours according to my tests). The extra cup in the lid is a big bonus. I highly recommend buying it!

This flask retains heat for a long time and is very well made. Perfect capacity for an outing, two mugs are very practical. The rough coating provides a secure grip.

The thermos is fantastic. It keeps drinks warm for a long time. After 10 hours in freezing temperatures in my backpack, the tea was still warm. It's leakproof; even after a fall, nothing leaks – it gets a bit dented, but stays tight.

In my opinion, it's a brilliant thermos. Tea brewed in the morning was still very warm over 14 hours later. The thermos stayed outside in my backpack all day, with temperatures from -5 to -2. Definitely worth recommending.

A solid, very well-made thermos for special occasions, holds heat perfectly as described. However, it is wider than it is tall, which may not suit everyone. Still – I definitely recommend it!

Excellent flask. It keeps drinks warm well and doesn't slip in the hand. I consider it one of the best flasks on the market. The promotional price matches the quality – well worth buying without hesitation. Highly recommended.

I've been using this flask for 5 years – at home, boiling water stays hot for ages and in the forest in winter it lasts all day with no problems. It's a solid, well-made bit of kit. Highly recommended.