Best Rated in Thermos Flasks

Compare the most helpful customer reviews of the best rated products in our Thermos Flasks shop. These products are shortlisted based on the overall star rating and the number of customer reviews received by each product in the shop, and are refreshed regularly.

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Top rated products in Thermos Flasks

4.7 | 10,417 customer ratings
92% of the ratings are 4-stars or 5-stars
I’ve used this almost every day since I’ve purchased it. Retains heat very well. I put tea leaves in a top up with hot water throughout the day, I know it’s not designed to filter out tea leaves but it does the job. Small enough to put into my handbag but big enough to carry a good amount of tea. Also quite easy to take apart and clean, simple and secure to put together. Haven’t had a single leak from it. Has survived multiple inelegant falls and tumbles and still looks unscratched. Worth every penny.
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By XPish
The claims of 8-hour plus heat retention are absolutely true, and sometimes I'll make my scorching hot black coffee the night before so it's the perfect temperature when I get to work the next morning. I haven't tested its leak-proof abilities but in everyday kind of use, I've not had any issues. Keep in mind this item requires user care in keeping all the parts (lid, gaskets/rubber seals, sippy thing) clean. It also keeps my cold brew chilled all day. Chuck a few small ice cubes in the flask and you're good to go. Highly recommend.
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By Gordon Y
So far so good - 3 weeks in.
Keeps things hot for over half day and is a nice handy size.
Leakproof so far.
Scratches terribly easily. I am yet to wash the outside of it but even then it got scratched sitting in the bag. The outer colour coating is soft and not thick.
Don’t buy it for the looks.
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By Al
3 offers from product price
4.7 | 10,260 customer ratings
93% of the ratings are 4-stars or 5-stars
We have several Zojirushi products (rice cookers, vacuum pots, thermos etc) already, and added the Stainless Steel Mug 20oz to the collection as the old 16oz thermos was slightly damaged after a significant drop recently.

We have been using the 20oz thermos daily from the day it arrived and continue to be impressed.

Pros:
Boiled water remains scolding hot after 6 hours, very warm after 12 hours.
Cold water remains icy cold much longer than hot water.
Quick lock/unlock/open.
Large spout for faster-flow pouring.
Lid components are easily detachable allowing simple cleaning.
Compact and light enough to carry around.

Con:
Don't pour too quickly as water will spurt through the smaller opening above the spout (vent allows smoother flow).

In our experience, there's no noticeable difference between products produced in Thailand/Japan, but the price is significantly different.

Overall great product with a very minor inconvenience.
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By Osmond
A great product and highly recommend!
It has a easy to use sipper with a small air hole to ensure that your favourite beverage continues to flow smoothly out of the flask. Opening the lid is as simple as clicking the open button (minimal force required) and the lid will flick open and the lid springs ensure that the lid remains back so that your nose/face doesn't touch the lid.

What I love about it is that the lid can be completely disassembled and you can wash everything easily.
The locking mechanism is easy to operate with one hand and the lid (to screw on to the flask) is also very secure and requires no/very little tightening pressure when screwing it back on.

There are a number of colours to choose from but I went the safe option of Black to ensure fingerprints and minor scratches are hidden. The Silky Black colour does have
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By Brad Y
It took a while to arrive as this particular model was only available from Japan but this is no ordinary mug.

Positives:
- actually keeps cold drinks cold (i put ice cubes in it and it will still be ice cubes after more than 24 hours)
- actually keeps hot drinks hot (not that my coffee lasts long but temp stays consistent the entire use)
- easy to clean (detachable parts that come in contact with your mouth)
- extra lock (to prevent accidental spillage in bag)

Negatives:
- doesn't come in any bigger sizes like 1L,2L or 3L (max is 600mls)
- pricey (but worth it!)
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By Dan
1 offer from product price
4.7 | 8,488 customer ratings
94% of the ratings are 4-stars or 5-stars
Looks great, does the job perfectly! Taken it on a few picnics and to the beach a couple of times, kept my tea piping hot! I haven't tried with cold as I have a double-walled drink bottle that I use instead.
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By hanzbanana
The product is the best one and the parcel traveled really fast
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By Gonzalo Olivares
functional, unbreakable, good quality
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By Ifee
4.7 | 7,729 customer ratings
92% of the ratings are 4-stars or 5-stars
My daughter loves this for winter lunches at school. Very compact, easy to use, looks great, holds plenty of food. Keeps it warm till lunch (if you follow the instructions about pre heating) my only negative is I thought the food would be a little hotter at lunch, but it's ok. Quick delivery.
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By SD
Bought two of these for kids lunches and they are great. Keep the food (or drink - have also tried hot chocolates in them!) really warm. Spoon in the lid is a great addition. Durable, well made, very happy with my purchase.
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By Melanie
The design and manufacturing quality of this container does seem to be a lot better than the generic containers out there. Nice size and the lid goes on and off easily (handy for young kids)
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By Mathew
3 offers from product price
4.6 | 18,878 customer ratings
90% of the ratings are 4-stars or 5-stars
I love it but the bottle is small around 350ml only if it was bigger
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By mia
Works well, my son loves it best buy
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By Prescilla gamble
We’ve been buying funtainers for years but could never find a fun character one - my son will love this
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By Carla
2 offers from product price
4.7 | 850 customer ratings
93% of the ratings are 4-stars or 5-stars
Perfect quality. Nothing to say rather we are very happy.
it keeps cold/hot water as described
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By Camila F.
Amazing product all good.
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By Marthin Cevasco
The claimed 40 hours of stored hotwater isn't quite accurate. Boiling hot water can at most only be stored ( too hot to the touch) for 12 hours. After that it's just luke warm.
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By Satchi Ragava
3 offers from product price
4.6 | 3,868 customer ratings
88% of the ratings are 4-stars or 5-stars
Very good. Happy with this product so far and have not had any issues. Fast shipping was good.
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By Nen & Jen
My second Thermos mug i have bought because i love them so much so useful and reliable! ice will not melt for over 24 hours in one of these and hot coffee stays hot for 12 hours
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By Chris
Satisfied.
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By U.K
4.7 | 656 customer ratings
93% of the ratings are 4-stars or 5-stars
This has really changed my routine and work life, I used to never drink coffee because it was too expensive from cafes and wouldn't last long. Now I can make my coffee in the morning, and it be pipping hot in the afternoon still (warning, this thermos is dangerously efficient). It holds two cups worth of coffee, and when I'm done with it around 11am, I give it a quick rinse (easy to clean), and then add a bunch of ice and water so it serves as an ice cold water bottle for the rest of the day. Another testament to its efficiency, I will forget to rinse it out on a Friday night, and end up cleaning it on Saturday, only to find it still has ice cubes in it from the previous day!
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By Thomas
i recently retired from a military career of 10 years and i have gone through several different thermals, the first day mine arrived i gave it a clean out to remove any packaging smells which it did not have and make a coffee at 11:00 am and because i made it hot i was not able to drink it until roughly 03:00 the next day, i am so happy with purchase i bought one for my partner.
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By jason
Best Travel Mug I ever used. Keeps the temperature perfect to my liking the whole day - exactly the temperature I make in the morning. Good size for enjoying your tea through the day . Loved it so much, that ordered other sizes for different drinks I use through the day- like 360ml for moring coffee and 480 for water , all in different colours. Got one as a gift to my best friend and she loves it for being safe and not leaking ever in a bag as well as the temperature keeping and she ordered other sizes as well. Definitely Will buy those mugs again for presents .
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By Mila
4.6 | 1,374 customer ratings
91% of the ratings are 4-stars or 5-stars
Magic
Specifications: Capacity: 500ml, Shipping Weight: 422g, Material: Stainless Steel 18/8 (Food Grade), Finish: Santorini
Pro:
- Does exactly what is written on the box. Will keep cold things cold for over 24 hours and hot things hot for over 12 hours. Normally I fill this up at night with cold water and leave it next to my bed. The next day I will take it to work and the water is as cold as when I put it in. Magic.
- Durable design. Scratches don't show but your mileage may vary depending on which exterior you go for.
- Cap seals tight and won't leak.
Con:
- Heavy: wouldn't want to carry this around all day but is fine in a bag.
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By UltimateWingman
Does what you pay for
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By Wanchai
Specifications: Capacity: 500ml, Shipping Weight: 422g, Material: Stainless Steel 18/8 (Food Grade)
Pro:
- Does exactly what is written on the box. Will keep cold things cold for over 24 hours and hot things hot for over 12 hours. Normally I fill this up at night with cold water and leave it next to my bed. The next day I will take it to work and the water is as cold as when I put it in. Magic.
- Durable design, especially on the heavy iron exterior. Scratches don't show but your mileage may vary depending on which exterior you go for.
- Cap seals tight and won't leak.
Con:
- Heavy: wouldn't want to carry this around all day but is fine in a bag.
- The heavy iron design is more silver than black in real life.
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By UltimateWingman
4.8 | 286 customer ratings
95% of the ratings are 4-stars or 5-stars
The colours are nice, keeps my water nice and cold. It arrived sooner than they said it would. Definitely a good purchase.
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By Stephanie
Wow! Totally gorgeous. Excellent quality and excellent service. Many thanks.
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By Hiranya Anderson
All the family loved them. Kept drinks cold for long periods of time especially on hot days
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By PC
4 offers from product price
4.5 | 2,273 customer ratings
86% of the ratings are 4-stars or 5-stars
I’m a water snob, I like my water ice cold. This bottle is excellent at keeping my water cold, and it’s just as good as, if not better than the Zojirushi I am replacing it with. The bottle has a nice matte finish, and feels very sturdy. It doesn’t have many parts to it, which makes it easier to clean. The only thing I don’t like is that it is very heavy when it’s full, much heavier than my Zojirushi, which has a similar capacity. It doesn’t bother me because I use a backpack, but I wouldn’t want to tout this bottle in a handbag.
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By widepeepoHappy
Pros:
- wide mouth accommodates the large pieces of ice
- keeps drinks cold and hot (not boiling hot thank goodness)
- doesnt scratch easily
- nice grip to it
- easy to close and open
- drip proof

Con: does NOT fit in our car's cup holder. the base is too wide!
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By Jhosie Rosidi
I bought this with the compatible S’well commuter flip lid so I that could use it for sipping ice coffee while driving. FAIL. 1. Bottle is too wide for my car drink holder, so I cannot use it for driving. 2. Flip top needs 2 hands to open, so even if I could fit the bottle in the drink holder I still couldn’t use it while driving and 3. The flip top got in the way of my nose when I tried to drink and consequently coffee dribbled over me (despite multiple attempts), so I can’t use it anyway.... Oh and 4). it leaked in my bag even though the lid was on tight. Otherwise it’s a nice bottle and would probably be fine with the standard lid.
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By Alanaa
4.5 | 837 customer ratings
89% of the ratings are 4-stars or 5-stars
I really enjoyed my coffee in this portable mug/thermos, so much so that after having it for a couple of weeks, decided to sell it as a pre-owned item and go for a 20 Oz size; the reason being that I could have a very large size espresso made by my favourite barista in the morning, and have it most of the day. Highly recommend the product, although a bit pricey!
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By Farid
Love everything. Performance is great and quality amazing. Takeya don't stand a chance against these
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By Wayne T.
Very functional in every aspect. Easy to fill, clean, and drink from. Hold temperature extremely well. Anyone who's had a Zoji, will know you have to put ice cubes in a hot drink before its cool enough to drink. Have had in in the car in 40deg C heat, and even after a few hours its still ice cold.

I have 5 Zoji's and they are all bloody good.

I tried a Pelican 2L flask (being a very big name and all), it was equivalent to using a plastic PET bottle compared to these.

I would never hesitate to recommend Zojirushi flasks. My first one has dings in it from some pretty big drops, still works like it did when new.
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By Adrian
4.4 | 3,396 customer ratings
85% of the ratings are 4-stars or 5-stars
It’s actually holds the temperature, as promised! Awesome stylish flask. I’ve got it in milk-blue colour - nice! Would recommend this product to my work colleagues! Hot tea can be brewed inside the flask, by using your favorite pyramid teabag and sorted for the all day out!
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By Elena
works great, but there is a metallic rattle coming from inside the bottles walls, since this is a vacuum insulated bottle i assume that it is a defect where a small bead of metal was trapped inside. said defect is kinda annoying but the bottle itself works well.
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By Crustaay
Got the bottle but it had a massive scratch down the side of it. Lid is also a bit painful trying to drink from it.
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By gav
4.6 | 351 customer ratings
90% of the ratings are 4-stars or 5-stars
Best water bottle I've ever owned. Going on 3 months now and it's a strong quality excellent bottle.
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By Toby Robinson
Amazing, I work in the out back of Australia where it gets about 40 degrees Celsius regularly in summer, this bottle keeps my water cool and is perfect for these conditions as it's also durable
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By Matt
I just got my new Highland Peak Stainless steel water bottle, I can see why its one of the best water bottles in the market. it looks great, stylist and I love the black color wrapped around the logo.

Well done.
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By VatosComics
2 offers from product price
4.6 | 337 customer ratings
92% of the ratings are 4-stars or 5-stars
Keeps my coffee warm for 12 hours. Bottle fills up the cap (cup) 4 times exactly. So a good way to ration...
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By Herman Putter
Arrived in perfect condition well packaged.
Stays hot all day. longest ive had it going is around 16 hours and still hot.
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By Charles
Aluminium lid was delivered dented despite good packaging. Functional but dented. Quality not there.
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By Brenton