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Best Thermos Flasks Reviews UK
The Top Rated Models In 2019

Last Updated on

If you are looking for a review of all the best thermos flasks in the UK, you have found the right place.

We review all the latest and best thermos flask models on the market, to give you peace of mind that you will be choosing the right product for your home.

Below, in the table, the thermos flask reviews start with the most highly rated first, then descend accordingly. For people who are in a hurry, you can use the table. For people who want a more in-depth review, you can scroll further down the page, where we provide all the pro's and con's for each.

Best Thermos Flasks Comparison Chart

Editors Choice
Stanley Classic Vacuum Bottle
Weight 839 g
Colour Hammertone Blue
Material Stainless steel
Isosteel VA-9562DQ 1.0 L Duo Vacuum-Insulated Flask
Weight 880 g
Colour Lined Blue
Material Stainless steel
Thermos ThermoCafé Multi Purpose Stainless Steel Flask
Weight 998 g
Colour Maroon
Material Stainless steel
Stanley Adventure Vacuum Travel Mug
Weight 49.9 g
Colour Navy Blue
Material Plastic
SHO Bottle - Ultimate Insulated, Double Walled Stainless Steel
Weight 367 g
Colour You Can Choose
Material Stainless Steel

The 10 Best Thermos Flasks On The Market Reviewed

This vacuum bottle from Stanley really says style. Stanley is a company leading in the vacuum products manufacturing industry to create legendary technology that serves you perfectly. With this vacuum bottle, be assured of great results. You can have your drink put in and maintain its heat for a long period.

The vacuum flask bottle has inner double wall vacuum insulation covered by an insulated lid to have your beverage at very high temperatures for a whole 24 hours. The body is made of grade 304 stainless steel which has superior corrosion resistance and free of Bisphenol-A (BPA) for drinks safety.

The total weight of the thermos flask when empty is 970 grams and has a one-liter capacity to serve 4 cups. The flask cup is 236ml doubled which is perfect because you can use the cup on the go and still works fine. The flask is made fully waterproof so you have less worry of water getting in or out. The hot drink flask is useful when you are hiking or camping for it carries just the right amount of hot drinks you need. It is the best flask for keeping drinks hot.

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The Best Thermos Flask
Pros
  • Keeps the drink hot for a considerably long time
  • Made waterproof
  • The bottom sits perfectly on a leveled base
  • Durable
  • Unwavering thermal performance
Cons
  • When the seal is loosely tied, the hours of heat retention are reduced

With a wide range of stainless steel products, the Isosteel manufacturers have this brilliant Isosteel VA-9562DQ Duo vacuum Flask with exceptional features. When assembled, it has a height of 345mm and a diameter of 95mm.

The filling diameter is about 4.9cm and it weighs about 910g in total and has an internal capacity of 1L. This thermal flask is made of 18/8 stainless steel with inner double walls that use vacuum technology.

The metal flask has two screw drinking cups meaning, you can share a drink from the flask with company. It boasts a compartment storage which you can keep your tea bags, sweeteners or coffee bags.

The flask features a folding handle and a shoulder strap to enable you to move around with the vacuum flask with much ease. To know which side to use for pouring out of the contents, there are small markings indicated on the handle.

You can clean the flask manually for it is not dishwasher safe. It has the ability to keep your drink hot for about 24 hours. This drinks flask is the best vacuum flask to use when hiking.

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Pros
  • Has high heat retention ability
  • It is stainless steel meaning it cannot corrode
  • Best flask thermos for hiking
  • Has a great design
  • Comes with a compartment storage
Cons
  • Not dishwasher safe

Looking for a two-in-one function thermal flask for both drinks and food? The Thermos ThermoCafé is ideal. This food + drink flask has a double wall vacuum insulation technology where the foods and drinks are kept at either low or high temperatures (hot and cold).

The outer and inner body is made of stainless steel and has an insulated stainless steel serving cup to use.  When you touch the flask containing hot contents, the body feels cold to the touch and when the contents are cold, you are met with the sweat-proof surface all thanks to the thermos’ vacuum technology.

Thermos ThermoCafé weighs 998g when assembled with a capacity of 1.8 L. The mouth is made wide enough to fill food or drinks, serve and clean with no much stress unlike the ones that come with a small mouth, you get trouble cleaning or serving from such vessels. The vessel comes with a dual purpose stopper to enclose the contents. For convenient portability, the multi-functioning thermal flask has a folding handle and a carrying strap to achieve this.

Pros
  • It is both a thermos food flask and a drinks flask
  • It is in the large thermos flasks category
  • Keeps food and drinks hot for long hours
  • Easier portability
  • Best flask for food and drinks
  • Durable
Cons
  • Not good for soup with chunky bits
  • Unreliable stopper
  • Low quality built

The use of ultra-modern double walled vacuum technology and premium 18/8 stainless steel on the SHO bottle provides the efficiency required.

The bottle can keep water or any other drink super-hot for a whole 12 hours and if you intend to keep it ice cold it goes an extra 12 hours (24hours). This bottle was invented to maintain the high standards of your drinking needs.

The unique design the bottle portrays says a lot on your style which makes it usable in gyms, at home or at work, while traveling to the beach or when hiking and camping.

You can put most of your drinks in this thermo flask bottle, you are not limited to any specific. Best used as cool flasks the SHO bottles come in different striking colors. The bottle is 100% leak proof and is BPA free for health safety.

Pros
  • 12 hours hot and 24 hours icy cold
  • Comes in stunning colors
  • All drinks worthy
  • Scratch resistant metal body
  • Best water flask
  • Eco-friendly reusable bottle
  • Guarantees satisfaction
Cons
  • Not dishwasher safe

You can never go wrong with the Stanley branded products. Here is yet another one that is on top of the game. The Stanley Adventure Vacuum Travel Mughas a vacuum insulated body and a thermal lid to help seal the contents at the required temperatures. This small thermos flask keeps your drinks super-hot for three hours and iced for 20 hours. The body is 18/8 stainless steel that you are assured of no rust. Naturally, it is BPA-free for food safety.

The small thermos has integrated D-rings that are clip able to packs using the push button lid. The lid is designed in such a way that you can open and close with one hand. This small flask is leak-proof safe in that when it is placed horizontally or tilted, the contents don’t leak. The lid of the flask thermos is dishwasher safe can be dissembled to enable deep cleaning. It is a car cup compatible vacuum mug. The mug carries a 473ml drink. This kind is one of the best flasks to keep your drinks ice cold.

Pros
  • Durable
  • Best small mug
  • Easy to open when moving
  • One-hand handling
Cons
  • The screws on the cup when not carefully placed cause the drinking slot to face a different angle making the handle useless

THERMOS is known for producing high-quality material products for reliable performance. The Thermos King Flask has double walls with vacuum insulation technology that hinders the convection process to maintain the contents at the desired temperatures. Keeps drinks hot for 18 hours and cold for 24 hours. It has a capacity of 470ml and has an insulated stainless steel serving cup that encloses the lid. When assembled it has the dimensions of 3.8 by 10.2 by 2.9 centimeters and weighs 771 grams.

The body feels cool to touch when containing hot fluids. When the flask has ice cold contents, the surface does not sweat due to the cold temperature. The surface is made sweat-proof to curb such situations. You can have the drink without opening the whole stopper to let out hot or cold air. 

This is made possible with the twist and pour stopper. The hot water flask is best used as a coffee flask on the go.

Pros
  • Keeps drinks hot and cold for a long period of time
  • Easily portable
  • It is safe to use with consumable drinks
  • It is durable
  • Has a twist and pour stopper to make work easier
  • Cool to touch surface
  • The best thermos flask to keep your drink hot for long
Cons
  • The casing scratches easily

The perfect solution to having hot food was found when this Pioneer Vacuum flask was made.  

The body is made of the finest stainless steel (18/10) for a longer shine and durability. The interior is made of a shiny stainless steel layer that acts a heat loss prevention.

The exterior is made of stainless steel which makes the hot food flask impact-resistant. It has a vacuum screw-on stopper that does not let in or out the hot air by conduction process. The stopper has a leak-proof design to prevent spillage.

It has a big capacity of 1 liter which allows the foods and soup to stay hot and for long over 8 hours and the cold fluids stay 24 hours colder.

For the best food flask to keep food, porridge especially this is the perfect container to rely on to achieve this. It is also the best soup flask to hold more than a standard can of soup. The thermos flask comes with 2 cups to have your meal or drink shareable.

Pros
  • Used for both drinks and pourable hot food
  • Has a stylish and practical design
  • Durable leak-proof design
  • It is the preferred thermos soup flask
Cons
  • Not dishwasher safe. You can wash it manually

The genuine thermos brand flask boasts a sturdy, dent resistant stainless steel body that makes it durable and brings out the shine. The flask has a double walled vacuum insulation technology that aids in maximum heat retention ability.

It keeps fluids hot for 14 hours and cold for 24 hours. It is made of durable stainless steel interior and exterior and features a stainless steel serving cup flask. The exteriors are cool to touch when the thermal flask has hot fluids and sweat-proof with colder fluids.

The flask thermos is made light to allow a bigger interior capacity of 350ml for its size. It has an enhanced push button stopper to ensure the pouring out of the fluids is done with ease. When assembled, the flask weighs 289 grams and measures 7 by 7 by 20 centimeters. The manufacturers have given the vacuum flasks a 5-year-guarantee. The thermos flasks make better coffee flasks to carry around.

Pros
  • Durable and appealing
  • Keeps drinks very hot
  • Small enough to fit in small bags
  • Doesn’t leak
Cons
  • Lacks a handle making portability a bit hard plus the surface is so smooth it can easily slip
  • Not dishwasher safe

The genuine thermos brand flask boasts a sturdy, dent resistant stainless steel body that makes it durable and brings out the shine.

The flask has a double walled vacuum insulation technology that aids in maximum heat retention ability. It keeps fluids hot for 14 hours and cold for 24 hours.

It is made of durable stainless steel interior and exterior and features a stainless steel serving cup flask.

The exteriors are cool to touch when the thermal flask has hot fluids and sweat-proof with colder fluids.

The flask thermos is made light to allow a bigger interior capacity of 350ml for its size. It has an enhanced push button stopper to ensure the pouring out of the fluids is done with ease.

When assembled, the flask weighs 289 grams and measures 7 by 7 by 20 centimeters. The manufacturers have given the vacuum flasks a 5-year-guarantee.

The thermos flasks make better coffee flasks to carry around.

Pros
  • Durable and appealing
  • Keeps drinks very hot
  • Small enough to fit in small bags
  • Doesn’t leak
Cons
  • Lacks a handle making portability a bit hard plus the surface is so smooth it can easily slip
  • Not dishwasher safe

The Thermos ThermoCafé Stainless Steel Flask, 500ml exhibits double wall vacuum insulation technology that is responsible for great heat retention capability.

The exterior and interior walls are made of stainless steel that is pretty durable. No matter how hot the fluids may be, the outside surface is not affected by the temperatures inside. It feels perfect to touch. With colder drinks, the wall is made sweat-free.

The capacity of the metal flask is 500ml and weighs 331 grams when empty with dimensions of 24 cm height and 9cm in diameter. This easy to use thermos flask has an insulated stainless steel serving cup that is washed manually. 


The whole flask is not dishwasher safe. It has a twist to turn stopper that allows you to pour out the flask’s contents. It is not a large thermos flask from THERMOS but with this medium capacity flask, you are sure to have your drinks super-hot and cold.
Pros
  • Keeps the drinks hot for long
  • Easy to use
Cons
  • Lacks a handle

Conclusion

In conclusion, the vacuum flasks should be cleaned thoroughly and regularly depending on the usage to ensure perfect results are achieved. For the flasks that tend to retain food or drink odours, washing with warm water helps to curb the situation. In our thermos flask review, all the products discussed have the perfect thermal performance to suit the different needs of the consumer. Having the right thermal flask at hand helps in making life easy with the increased technology to keep your meals and drinks at the required temperatures.

If we did have to pick one it would be the Stanley Classic that tops the rest.

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Thermos Flasks Buying Guide

Benefits of having a thermos flask

Are you often traveling, hiking, camping or always busy at work? Well, these containers are useful when we want our drinks and foods to be at certain temperatures on the go. Having a hot homemade meal during your lunch break at work offers perfect benefits on to your body. This can be achieved when you have the best food flask that suits you to carry the meal. When excising or traveling under very hot climates, you can quench your thirst with the cold drink carried from a vacuum flask that you have.

You can preserve your food and drinks at low temperatures when you have these flasks to give your refrigerator a break. The standard vacuum flasks usually keep the contents cold for 24 hours. You can also store your hot beverage or hot meal overnight to enjoy them the next day to save the time used for warming.

Factors to consider when buying a thermal flask

Naturally, the cost of an item really matters because you have to stay on a budget. Therefore, you need to look for the flask that is within your budget and performs the task effectively.

If you are low on the budget, the Thermos ThermoCafé Stainless Steel Flask, 500 ml is ideal.  The Thermos ThermoCafé is perfect for when you want the multipurpose flask to store food and drinks. You will have both a food and drinks flask all in one saving you money.

The capacity of the flask is the second thing that you should put into consideration when buying a thermos flask. This greatly lets you have the right size of thermos flask to suit your needs. The small thermos flasks are ideal for individual use whereas the ones with a larger capacity are usable in large groups. The material used in making these thermos flasks is also another factor to determine the durability of the flask, and how to clean the flask after use.

The time the flask takes to retain the contents temperatures is also a key factor. When you want to carry food or drinks to have them at a later time, you should look for the one that has long hours to perform that. Most of the flasks on the market are designed to keep the contents hot only and others can do both cold and hot food and drinks temperature retention. The lid on the flask does a great job of sealing the contents to determine the heat retention time.

Other features like the handles on the flasks and how you carry the thermos flasks determine how to hold the flasks for efficiency performance. Getting the flask that will give you the best results while using is key.

Thermos Flasks Buying FAQs

Q: For the fluid small flasks, can you directly drink from them?

A: Not all the drinks flasks available in the market have the direct drink design, some just have the pour option only. So, before you buy the flask, check if it has either options or one.

Q: Do the flasks leak when placed horizontally?

A: The most available flasks have a tight seal that prevents the contents from spilling. How careful you seal the flask determines the leakage.

Q: What is the duration of the flasks?

A: The material of the flask really plays a big role in the durability of the thermos flask. The stainless steel flasks tend to last longer to serve you more.

About the Author Catherine Wheeler

Hey, I'm Cath :) Iv'e got two beautiful young girls who mean the world to me. I used to be a head chef over at my local restaurant but I gave that up to look after my girls. I decided to put my culinary experience to use here by bringing that wealth of kitchen related knowledge and sharing it with you guys.