In this guide we’ll look at the best vacuum flasks.
We’ve compared size, design, ease of use and cost
to give you our top recommendations.

What is the Best Vacuum Flask?

IMAGERECOMMENDED PRODUCTSPRODUCTFEATURES
  • Large 1.9L capacity
  • Drinks hot for 24 hours
  • Practically indestructible design
  • Twist and pour stopper
  • Range of colours available
  • Drinks hot for 24 hours
  • Simple but sturdy design
  • Folding handle and shoulder strap
  • 2 drinking cups included
  • 50 year guarantee
  • Range of stylish designs available
  • Best vacuum flask for commuting
  • 2 sizes available
  • 100% leak proof
  • Drink straight from the flask

More Detailed Vacuum Flask Reviews

Stanley The Legendary Classic 1.9L Vacuum Flask

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FEATURES
  • Large 1.9L capacity
  • Drinks hot for 24 hours
  • Practically indestructible design
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Stanley The Legendary Classic 1.9L Vacuum Flask Review

The Stanley Legendary Classic is the best vacuum flask for keeping liquids hot. Perfect for anything from camping trips to commuting, this will keep your liquids hot or cold for up to 24 hours. Fill with cold water, hot coffee or even an ice cold orange juice!

Built like a battleship with an awesome green finish, this flask is seriously tough. FDA approved and BPA-free, this is 100% safe to use, and can be left out in the sun. The stainless steel construction ensures it’s incredibly durable, while the environmentally responsible manufacturing methods means it can be purchased and used guilt-free.

As a testament to its quality, this comes with a lifetime guarantee.

Thermos 1.2L Stainless King Vacuum Flask

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FEATURES
  • Twist and pour stopper
  • Range of colours available
  • Drinks hot for 24 hours
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Thermos 1.2L Stainless King Vacuum Flask Review

The Thermos Vacuum Flask is a hugely popular flask all around the world – for good reason! This uses highly effective thermos vacuum insulation technology for maximum temperature retention, keeping drinks either hot or cold for 24 hours.

This has a durable stainless steel construction, and comes with an insulated serving cup. The thermos is cool to the touch no matter how hot the contents, while the twist and pour stopper makes for easy and safe pouring.

Available in a range of colours with a 50 year guarantee.

Isosteel VA-9562DQ 1L Duo Vacuum Flask

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FEATURES
  • Simple but sturdy design
  • Folding handle and shoulder strap
  • 2 drinking cups included
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Isosteel VA-9562DQ 1L Duo Vacuum Flask Review

The Isosteel Vacuum Flask is a smaller vacuum flask with a 1L capacity. It’s ideal for taking on hikes or on your commute, with an ergonomic folding handle and shoulder strap. It has a simple design that packs away easily in a backpack.

This comes with 2 drinking cups included that neatly attach to the top and bottom of the flask. The stainless steel construction ensures this flask is very durable, while the vacuum technology keeps your drinks hot or cold for hours on end.

Thermos 470ml King Vacuum Insulated Food Flask

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FEATURES
  • 50 year guarantee
  • Range of stylish designs available
  • Best vacuum flask for commuting
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Thermos 470ml King Vacuum Insulated Food Flask Review

The Thermos Food Flask is the best small vacuum flask, perfect for commutes or long days at the office. This has a 470ml capacity so it’s lightweight even when filled with liquid. It keeps drinks hot for 9 hours, and cold for up to 14 hours.

With a durable stainless steel exterior, this is long lasting and won’t dent. It’s cool to the touch even when filled with hot coffee, and comes with an extra wide mouth for easy pouring. It comes with a lid that doubles up as a serving bowl or cup, as well as a stainless steel spoon.

Grunwerg 200ml Drinkpod Capsule Vacuum Flask

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FEATURES
  • 2 sizes available
  • 100% leak proof
  • Drink straight from the flask
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Grunwerg 200ml Drinkpod Capsule Vacuum Flask Review

The Grunwerg Drinkpod Capsule Flask is a high quality, vacuum-insulated flask with a virtually unbreakable inner and outer body. This keeps liquids hot for 6 hours, or cold for 24 hours.

Easy to use with an ergonomic plastic lip, you can enjoy your drink straight from the flask with no need for a cup. It’s 100% leak proof even when stored horizontally, making it great for hiking or commuting. Choose from 200ml or 300ml capacity, and a range of bright colours.

Conclusion

There’s nothing worse than a lukewarm cup of tea or coffee, and a quality vacuum flask will keep your drinks hot while you’re on the go, as well as keeping them cold in the summer. The Stanley Vacuum Bottle is our top recommendation for the best vacuum flask thermos. With a virtually indestructible design and a huge 1.9L capacity, this flask is a well deserving winner.

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