Top 10 Best Food Jar Thermoses – Food flasks to bring your own lunches to work or the outdoor

In the winter months, when it is freezing outside, you get into work and do not feel like coming out, not even to grab a quick bite then bring your own hot meal with one of these food flasks.

Out on field work, school, camping or on a picnic and fancy warming up to soup or chilli or just any warm food, these flasks will keep your food warm for hours. It will also keep desserts and cold beverages cold for even longer.

Typically, depending on the size, these double walled stainless steel food jar will keep hot food warm for up to 8 hours on average and cold drinks or food cold for up to 12 hours. Better food flasks can keep food warm or cold for up to 20 or more hours.

Perfect travel food jar for lunch, dinner, snacks or anytime you are on the go; suitable for both adults and kids. It can carry soups, fruit, salads, pasta or beverages hot or cold.

As all these food flasks are double walled for thermal insulation to keep the temperate inside constant for as long as it can, it is also cool to touch and condensation free on the outside.

RELATED: Our other article focuses mainly on big food jars for adults, see below

The Best Large Food Jars: Food thermoses bigger than 20-ounce plus super-size varieties

The 10 Best Food Flasks – Food jars to keep your healthy warm lunches

From compact food jars for toddlers 10-ounces to medium adult food jars up to 16-ounces or 17-ounces to family sizes up to 34-ounces, there is a food flask to fit every category in our line-up.

  1. Thermos Stainless Steel King Food Flask 473ml 16-oz
  2. Stanley Adventure Vacuum Insulated Food Jar 532ml 18-oz
  3. Thermos Funtainer Food Flask 532ml 18-oz
  4. Thermos Stainless Steel King Food Flask 710ml 24-oz
  5. Thermos Foogo Vacuum Insulated Stainless Steel 295ml 10-oz
  6. Stanley Classic Vacuum Insulated Food Jar 17-oz 24-oz
  7. Thermos 2330TRI6 Vacuum Insulated Food Jar 295ml 10-oz
  8. Stanley Master Stainless Steel Vacuum Insulated Food Jar 710ml 24-oz 
  9. ThermoCafé Stainless Steel Food Flask 503ml 17-oz
  10. Energify Vacuum Insulated Food Jar 17-oz, 24-oz


Food Flask (Thermos Food Jug) for Everyday Use

1. Thermos Stainless King Food Flask 16oz | Midnight Blue

First launched in 2007 the iconic Thermos King range is the best-selling Thermos collection throughout the world. With durable stainless steel interior and exterior, the Thermos Stainless King Food Flask is cool to the touch with hot liquids or food, sweat-proof with cold liquids or desserts and has an extra wide mouth to make it easy to fill, serve from and clean.

The King Food Flask can keep food or beverage hot for up to 9 hours and cold food or drinks cold for up to 14 hours with its double walled insulation. The cover doubles as a serving bowl and a foldable spoon is included perfect for a warm pack lunch for one.

This iconic Thermos food flask is available in cool metallic colours. Our favourite is midnight blue, shown below. Other brighter colours include Copper, Raspberry and Cranberry Red. For darker shades, you have matt black and gun metal gray to choose from.

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  • Capacity: 16 oz. (470ml) Ultra-durable travel food jar for hot and cold beverages; 
  • Durable stainless steel interior and exterior
  • Easy-to-fill wide mouth; generously sized lid doubles as serving bowl; includes telescoping stainless steel spoon
  • Stays cool to the touch with hot liquids and is condensation-free with cold
  • Available in Cranberry, Matt Black,  Midnight Blue (featured) or Stainless Steel.

2. Stanley Adventure Vacuum Insulated Food Jar 18oz | Silver

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  • Capacity: 18oz
  • Vacuum insulated leak proof wide mouth bottle with full size spork included. Keep food hot or cold up to 12 hours.
  • Stainless steel body, leak proof double lids with top lid doubling as bowl
  • The Adventure series is available in 10oz, 14oz, 18oz or 24oz. The flask featured here is 18oz.
  • Also available, Stanley Classic further along in our list.

3. Thermos Funtainer Food Flask – 290 ml 10oz | Multiple Colours & Designs

  • Capacity: 10 oz 290ml
  • Thermos vacuum insulation technology for maximum temperature retention hot or cold
  • Keep food cold for 7 hours and hot for 5 hours with stay cool exterior
  • Durable stianless steel interior and exterior
  • Available in Pink, Blue, Floral or Foot Ball theme and many other designs

4. Thermos Stainless King Food Flask – 710 ml 24oz | Midnight Blue

Another entry from Thermos, this time the bigger capacity King Food Flask with 710 ml volume for even more food. With bigger capacity comes more heat mass which translate to longer heat retention. It will keep hot food or liquid warm for up to 14 hours, that’s 5 hours more than the smaller 470 ml version. As for cold beverage or dessert, the King Food Flask 710 ml will keep it cold for up to 24 hours.

The all metal body exterior and interior makes this a worth while investment. With double wall vacuum insulation, not only is it durable and strong, it also ensures that the flask is cool to touch when carrying hot food and does not sweat when carrying cold content while retaining the temperature of its content for longer. Use the stainless steel lid as a cup or bowl to eat from and save carrying separate containers for serving.

However, the one thing it lacks when compared to the smaller 470 ml version is the foldable spoon. Not only does it not come with one, there is no slot for one in the cover either so you are going to have to carry a separate spoon. As you get a wide opening, even your full size spoon will work fine with the flask.

Available in a variety of colours with matt black featured below, you have a wide choices, choose from metallic blue, copper, midnight blue, gun metal, cranberry red or copper.

  • Capacity: the bigger 24 ounce version of the King Flask from Thermos.
  • Keep food hot for up to 14 hours and cold for up to 24 hours
  • Durable stainless steel interior and exterior, cool to touch even with hot liquid inside. Sweat-proof exterior with cold content.
  • Wide cup doubles as bowl

5. THERMOS FOOGO Vacuum Insulated Stainless Steel 10-oz | Multiple Designs

  • Capacity: 10oz – COMPACT
  • Keep food warm for up to 5 hours, keep cold food cold for up to 7 hours
  • THERMOS FOOGO double wall stainless steel food jar features THERMOS vacuum insulation
  • Designed with kids in mind: the stainless steel interior and exterior is durable and withstands the demands of daily use
  • Base of the jar is non-slip and scratch resistant. The wide opening lets you easily fill or lift out the food and clean.
  • Other colours and design available, see below.

6. Stanley Classic Vacuum Insulated Food Jar 24oz/17oz | Navy or Green

The Stanley brand has a rich 100+ year history. Born from inventor William Stanley Jr. who invented the all-steel vacuum bottle we know and love today, the Stanly Classic draws it’s design inspiration from that original bottle.

Available in two sizes; 17oz or 24oz and in two colour choices, Hammertone Navy (shown below) or the classic Hammertone Green, the Stanley Classic Vacuum has a powder coated and painted body while the top and bottom of the flask is finished in plain stainless steel, a classic and timeless design that is ever fresh.

For the big 24 oz version, it comes with a handy extendable handle. Both 17oz and 24oz food flask comes with an insulated outer lid that doubles as a bowl or mug that can carry up to 12oz/354mL or food and a wide mouth opening for easy access. The larger flask keeps food hot or cold for up to 15 hours while the smaller flask keeps food warm or cold for up to 12 hours.


  • Capacity: 24oz
  • Vacuum insulation keeps food hot or cold for up to 15 hours
  • 18/8 stainless steel that is rust proof and naturally BPA-free
  • Wide mouth perfect for soup, insulated lid doubles as 12oz / 345ml bowl

7. Thermos Vacuum Insulated Food Jar 10-oz | Silver & Black

Great for little people, the 10 oz food jar is capable of keeping food warm for up to 5 hours while cold dessert or drinks cold for up to 7 hours. While the body of the container is made from stainless steel, you do get plastic bumpers both on the top and bottom of the container and a plastic lid. These plastic bumpers protect the flask from knocks and offers a non-slip and scratch resistant use.

Thermos offers their TherMax double wall vacuum insulation design like those found on their bigger food jar to make sure that you get maximum temperature retention be it hot or cold. The result, a durable, lightweight and compact food flask perfect for the little ones. Your kids will love it as it will carry just the right portion of food for their lunches.  

  • Capacity: 10oz
  • Thermos vacuum insulation technology allows for maximum temperature retention, hot or cold
  • Keeps hot for 5 hours, cold for 7 hours
  • Durable stainless steel interior and exterior. Light, compact and portable with ergonomically designed lid

8. Stanley Master Stainless Steel Vacuum Insulated Food Jar 710ml 24oz 

Again, from the legendary brand, Stanley comes the Stanley Master series. This big 24oz model is good to keep hot food warm for 20 hours and cold dessert or drinks cold for up to 20 hours. It does this with double wall vacuum insulated construction. The Master series promises unbreakable build with unrivalled durability and best thermal retention. The flask comes complete with a redesigned handle for better grip.

Stanley Master Stainless Steel Vacuum Insulated Food Jar
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Stanley Master Stainless Steel Vacuum Insulated Food Jar
  • Capacity: 24oz
  • Superior vacuum insulated soup & food thermos, double wall 18-8 or grade 304 stainless steel 100% BPA free protects your health and the quality of your food
  • Food thermos container keeps food and beverages hot for 20 hours, cold for 20 hours
  • Wide mouth for easy filling, new redesigned handle

9. Thermos THERMOcafe 0.8L Stainless Steel Multi Purpose Food Flask 27oz | Black & Silver

One of the few high capacity food flask with a carry handle, the bullet shaped Thermos Food Flask from ThermoCafe not only looks the part but is both functional and sturdy. The body of the flask is made from dual layered stainless steel vacuum sealed to create an airless space in the wall keeping the cold or heat in and the exterior temperature out.

Apart from the stainless steel lid that can double as a food bowl, the main container has a large opening at the top making it easy to fill up and eat from as well as to clean up after. To keep hot food warm for longer, it is recommended that you pre-heat the container using boiling water. Pour hot boiling water into the flask either half or 3/4s full and keep it in the flask with the lid screwed on for about 10 minutes. Then, empty the flask and store your hot food, also piping hot or boiling straight away.

Note that if the food that is going into the food flask is lukewarm, give it a quick 30 second or 1 minute reheat in the microwave before putting it in the flask. This ensures that the food stays hot for longer. From experience, preheating both the flask and food before storing lets you keep the food warm for up to 10 hours easily.

  • Capacity: 800ml, 27oz
  • Double wall vacuum insulation retains hot or cold temperatures
  • Durable stainless steel interior and exterior 
  • Insulated stainless steel serving cup
  • Convenient folding handle with carrying strap for easy portability
  • Also available 1.2L and 1.8L Flasks

ALSO: ThermoCafé Stainless Steel Food Flask, 500 ml 17oz | Black & Silver

For those whom are budget conscious, the 500ml ThermoCafe Stainless Steel Food Flask presents a good buy as it is both great value for money and handsomely designed. The all metal container is made from stainless steel with no plastic or glass parts inside.

The same cannot be said about its lid but still, it is made from durable plastic and locks the content in well without leaking. If you wish to keep hot food warm for longer, remember to preheat the container and start with boiling or piping hot food to enjoy your soup or food at just about the right temperature come mid day. You also get a plastic foldable spoon with this food flask.

  • Capacity: 500ml, 17oz
  • Double wall vacuum insulation retains hot or cold temperatures
  • Durable stainless steel interior and exterior
  • Cool to the touch with hot liquids, sweat-proof with cold
  • Wide mouth is easy to fill, eat from and clean
  • Includes plastic folding spoon

10. Energify Vacuum Insulated Food Jar 17oz, 24oz

Available in two sizes and in three different eye pleasing colours with light gray cover, the Energify stands out from the rest in that it has a rubber carry strap and easy to open cover. The leak proof design keeps the food inside air tight. Included with the flask are carry case and foldable spoon. Other colours are pink, blue, orange and grey although the bigger 24 oz version only comes in orange or grey.

The vacuum insulated jar is made from 18/8 304 food grade stainless steel like most food flask here. However, the cover is made from BPA free plastic and silicone. It comes off easily to convert into a food bowl. On top of that, the bottom of the flask is lined with non-slip silicone to protect the flask from slipping and scratches.

  • Capacity: 17 oz or 24 oz
  • Leak-proof design with vacuum seal.
  • Jar made from 18/8 rust-proof stainless steel inside and outside, dishwasher safe.
  • Lid is made from BPA free plastic and doubles as food bowl
  • Double wall vacuum insulation provides maximum retention of heat or cold.


Hydro Flask Vacuum Insulated Stainless Steel Food Flask 12-oz

  • Capacity: 12oz
  • Small enough to easily throw into a backpack, book bag, or purse it is just the right size for snacks and in-between meal
  • The Food Flask will keep contents hot or cold up to 3 hours
  • BPA-Free, 18/8 Stainless Steel
  • Double wall vacuum insulated technology will keep hot foods steaming hot and cold foods chilled and fresh

ALSO: Hydro Flask 18-oz Vacuum Insulated Stainless Steel Food Flask 18oz

Zojirushi Stainless Steel Food Jar 11.8-oz, 16.9-oz, 25-oz

Compact design with 18/8 stainless steel construction, tight-fitted lid with gasket seals to minimise leaks and retain heat and 2 1/2-inch wide opening.

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Zojirushi Stainless Steel Food Jar
  • Capacity: 11.8-oz, 16.9-oz, 25-oz
  • Stainless steel flask with wide neck
  • Keep cold and hot food or beverages for hours

Grunwerg Pioneer 1.0l Stainless Steel Food Flask

  • Capacity: 1 L/33.8 fl oz
  • Stainelss steel flask with wide neck
  • Keep cold content for up to 24 hours, keep warm content for up to 8 hours

VonShef Vacuum Food Flask – 500ml (17oz) and 750ml (25oz)

The VonShef Vacuum Food Flasks are available in 500ml or 750ml capacity. They are good alternatives to all metal food flask options out there. Both flasks come with foldable metal spoons that can be stored in the lid when not in use, saving you from carrying a separate spoon. The wide opening allows you to fill it up easily and eat directly from it without any hassle. It also means that when you have finished, it is easy to clean up.

The flasks will keep hot food warm for hours, up to 7 hours and cold food cool for up to 9 hours with its vacuum insulated double wall design. While it is easy enough to eat straight from the flask, you can also use the top cover as a bowl or mug.

As a tip, if you wish to keep your food hot or cool for longer, pre-heat or pre-cool the flask before using it to carry your food. For pre-heating, simply run it under the hot water tap or using a small amount of bowling water to rinse it before use. Also, ensure that your hot food is piping hot before storing it in the flask. For pre-cooling, leave the flask in the fridge overnight before use.

And, if you like your things colour and design co-ordinated, you will be glad to know that apart from the two different sized food flask, there is also a drink flask from VonShef in the same design and colour.

VonShef Food Flask 750ml
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VonShef Food Flask 500ml
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