10 Best Insulated Coffee Flasks 2021

With a choice of colours from the dark and moody to the bright and vivid, as well as a pick of different sizes depending on when and where you are going, this bottle is the perfect companion for any eventuality.

The double-walled vacuum insulation will keep your hot drinks safe for up to six hours, which is likely plenty of time for any coffee addict to finish the lot off. It is made from 18/8 high-grade steel so is fabulous quality, and its also completely BPA free for anyone wanting to avoid plastic.

This also means that it won’t impart any funny tastes onto you drink no matter what you have in there. There is no absorption of odours either, and if you’re opting for a cold drink for the day, it will taste clean even 24 hours later.

With a powder matte finish, it will never look covered in condensation and will be hard to tarnish too. This also means you won’t have moisture dripping down your work shirt or leaving a puddle on your desk.

A travel cup just isn’t appropriate for your commute. You always end up with coffee over your bag, it isn’t as warm as you like when you reach the office, and it simply doesn’t hold enough either.

Chilly’s bottles are perhaps the most famous insulating bottles around. Mostly used for cold drinks by those who want something reusable, they can actually also keep your hot drinks hot for up to 12 hours.

The food-safe stainless steel will never rust or impart any odd tastes onto your drink, so it still tastes fresh hours after first making it. With a leak-proof screw top lid, it is easy to drink from and also easy to pour from so you can serve yourself all day, or the family when out on a hike. This is narrow so you won’t risk missing your mouth.

Two-ply construction means there is no condensation on the outer, so you won’t get dripping water or slippy cold hands. It’s lightweight and fits in most cup holders, making it an ideal travel bottle.

It is also the top pick if you are looking for the best small hot drink flask.

Thermos is a generic term which many people use to describe a thermal flask, a bit like when people refer to vacuum cleaners as Hoovers. So as you’d imagine, the brand is pretty good at what they do.

If you’re off on a road trip and overnight camping stayover, this generous capacity flask will keep your coffee warm for an entire 24 hours. This is two or three times as long as most of its closest rivals, which is very good going indeed. It makes it the best thermal coffee flask in terms of the time it can keep hot drinks hot.

The durable stainless steel will largely stay free from dents and scratches, and you also get a little serving cup on the top which is perfect for when the pit stop break arrives. With a twist and pour stopper, you don’t need to remove any lids to get the coffee flowing, and it stays leak-proof as well.

There’s a handle which makes it easier to pour from, and even though this isn’t fixed so it saves space and therefore rattles a little when carrying, it is still really safe and sturdy to hold which eliminated the risk of accidents.

Almost two litres of coffee can be held in this thermal flask, which is pretty astounding and will keep an entire group of caffeine lovers happy for the full day it stays warm.

It is primarily a growler, used to transport beer from breweries, but is just as effective at keeping coffee hot as it is keeping beer cold and crisp. And we would imagine that there is more demand for a huge coffee flask than for a beer transporter out there.

Environmentally safe and natural, it can be used over and over again and there is never a metallic or plastic taste in your drinks. A nice grip handle will allow you to serve it all out, and the clip lid is sturdy and easy to fasten and undo for one-handed pouring.

More of an iced coffee fan? It can keep drinks cool for 24 hours and iced drinks icy for up to four days. Pretty phenomenal.

You don’t want tea, you want coffee. We hear you. But it doesn’t mean we can’t use some of their products, because after all, we all do come together in the search for a hot drink.

The idea is that you pop loose tea leaves into the diffuser and the taste stays strong over time. This could be good for anyone who wants their coffee granules to develop in order to make a flask of cold brew, or you can leave it out altogether if your drink is already perfect.

Screw the top on and then place it into your bag for coffee on-the-go. It won’t leak everywhere, so running for the train is no longer a difficult process. It can keep drinks warm at 60°C for up to six hours which will get you (almost) through a working day.

It would make a great flask for anyone who sometimes loves tea, sometimes needs a coffee, occasionally tries a green tea when on a health kick and sometimes adapts their hot drinks for the summer months.

When you are travelling, how long a bottle will keep your drink warm for is really important. But as is how you drink the coffee and how the bottle can be carried. All of that makes this one the best flask for travelling.

This one is slim and convenient, with a practical screw cap which also doubles up as a carry handle. It can be hooked onto a bag, a waist belt, around your neck or simply carried by hand (although it is on the heavier side so maybe best in a bag for long periods). The integrated mug is handy as it takes up no more space, yet is always there when you need it.

Able to keep hot drinks for 18 hours and cold for 24, it will see you through the day no matter the contents. It is made from stainless steel and avoids BPA, pollutants and phthalates.

Tefal is a big name in the general kitchenware world, continuously making products which revolutionise lives.

They’re perhaps best known for their pans and air fryers as opposed to their vacuum flasks but as you would expect, a brand with so much knowledge has made a very good product here.

The safe lock lever ensures no leaking and that it pours precisely, and the lid on the top can also double up as a small cup. It is virtually unbreakable, so even the most active of adventurers will struggle to make a dent on the outer layers.

You can buy it with a stainless steel finish or with a black or red silicone wrap, which would be best for anyone who will be carrying it for a while.

A really popular brand and bottle across the pond, Klean Kanteen is also a best seller in the UK and the glowing reviews are perfectly understandable.

The large 44mm bottleneck opening is large enough to fit in ice if you are opting for a cold drink instead, and will also make it easier to fill the flask with water and pour from it. It can keep a drink hot for 20 hours, making it one of the best picks for heat duration if this is your main concern.

We love how you can buy other caps and lids for the bottle, from a sippy cup or a classic water top to a wider loop cap or cafe cap which you can pour from. It comes with the traditional leak-proof ring cap, which is perfectly fine for general use.

There are also matching reusable straws, cups and tumblers to buy, and they sell a brush which can help you to get it sparkling clean inside again.

A Bodum product makes it on to pretty much every coffee accessories list we do. And it is no surprise, given their popularity and quality.

This Chambord is a jug, so best for anyone who will be taking a large serving of coffee on a picnic, to a work meeting or in the car for a drive. It pours without dripping and most importantly keeps the hot drinks warm for hours.

The plastic outer doesn’t get too hot to touch, which is great for when multiple people will be using it. Available in black, off-white and bright green, the jug has managed to retain the classic Bodum handle styling which makes their other products so famous, which is a nice touch.

Personalised coffee products make really nice gifts. The ability to add custom text to this plain yet great quality flask will appeal to anyone who knows somebody who is always complaining about the cost of coffee at their work/in Starbucks and needs it to stay warm.

Or maybe, you need to put your own name on a flask because Jennie from the office is always pouring from your flask ‘accidentally’. Or because your other half is always getting your coffee flask mixed up with their fruit tea one and then complains that your coffee has stained slightly.

It looks deceptive as it can actually hold one litre of drink. The screw-on lid doubles as a cup, while ensuring no spills escape into your bag.

The engraving will last a lot longer over time compared to a print, especially when it is washed and carried all day. For the price, you get a very good product indeed, and it is the best personalised flask we found.