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Nerdy Science in the Kitchen

Best Thermos for Cold Drinks



Keeping your beverages cold is essential in the summer’s scorching hot weather. If you have ever been nearly dying of thirst so badly that you found the nearest water bottle and dumped the water into your mouth as fast as possible, only to realize the water had reached a temperature so high your body rejected it completely, then you know what I’m talking about.

I like the Stainless King at Amazon.

The good news is that in the modern age we have technology inside our water containers that can keep our drinks ice cold for nearly an entire day, no matter how hot it is outside.

water bottles
Insulated containers like these can keep your drinks nice and cold for hours or even days on end!

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There are several companies that offer these products, and they each have their own strengths and weaknesses.

Today I want to go over three of these companies, with three different thermos bottles that keep our drinks cold during the day. We’ll go over the pros and cons of each bottle, and I’ll give you the bottle I feel performs the best all around.

Thermos Stainless King

Thermos Stainless King 40 Ounce Beverage Bottle, Midnight Blue

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Made by the company that invented the thermos, they are the original insulated cup company and remain at the top of the pack in this industry. The “Stainless King” is a 40-ounce beverage container (and I don’t think that is an accident) with a cup for pouring yourself a serving of whatever it is you put in there.

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It has a patented vacuum insulation design that gives maximum temperature retention and can keep your drink cold for up to 24 hours. It has a stainless steel interior, as well as a stainless steel exterior, so your drink stays ice cold on the inside but warm to the touch on the outside.

Thermos cups are extraordinarily durable, hence why they have been the working man’s cup for the better part of a century, and they also have a satisfaction guarantee. If you have an issue with your beverage container, Thermos will replace it for you at any time within 30 days of your purchase.

Should you purchase this?

Thermos has been a mainstream company since 1904 and has always been a standard bearer for insulated cups. You really can’t go wrong with any of their products. Personally, I am not a big fan of the way that their container is shaped, but I do love the serving cup that is included with the Stainless King. If you like the way it looks, you should get it. You will certainly like the way it performs.

With so many different brands to choose from, check out my recommendations for the best insulated container you can get.
With so many different brands to choose from, check out my recommendations for the best insulated container you can get.

Hydro Flask Double Wall Vacuum Insulated Water Bottle

Hydro Flask Stainless Steel Coffee Travel Mug - 16 oz, Black

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Sure, the name takes forever to say (even longer to type out), but it will keep your beverage colder than most any other insulated container you will find on the market. In fact, you will be hard pressed to find very many people who have had bad experiences with the Hydro Flask.

The Hydro Flask can keep your drink frosty for 24 hours, easily. It is made of 18/8 stainless steel, so it is effortless to clean while being extremely durable.

It comes in a wide variety of different colors and can hold up to 20 ounces of liquid. It has a wide mouth opening of 2.19 inches and can fit all the Hydro Flask accessories such as the Straw lid, hydro flip, and wide mouth flex cap.

It also has a Hydro Flask proprietary powder coat that keeps the bottle from getting slippery after holding it for a long time. It is double walled vacuum insulated with TempShield technology keeping you liquid cool for the entire day.

Should you get this?

The Hydro Flask is definitely great at keeping your drinks ice cold – one of the best for that. But it only holds 20 ounces of liquid while the Thermos held up to 40 ounces. Put that in conjunction with the fact that you have to purchase accessories to get the most use out of the cup, and I would have to say that the Stainless King is a better deal.

Yeti Rambler 36 ounce Stainless Steel Bottle

YETI Navy Rambler Chug Bottle, 1 EA

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Yeti is probably the best brand when it comes to temperature retention. This Rambler bottle holds 36 ounces of beverage and keeps it cool for more than a day.

Like the Hydro Flask, it is made with kitchen grade 18/8 stainless steel, making it beautiful, shiny, durable, and best of all, a snap to clean.

It comes with a Triple Haul cap that makes it super easy to grip your bottle, so you never have to worry about it slipping from your grip.

The double walled vacuum insulation featuring a stainless steel inner wall and a stainless steel outer wall keep your beverage ice cold on the interior and comfortable to grasp on the exterior, meaning you don’t have to worry about any condensation building up on the outside and robbing your drink of its chilliness.

Should you get the Yeti?

I will always say that Yeti may be the best brand on the market. The problem with this particular model is that the top is very wide and makes it uncomfortable to drink out of. If this is something that does not bother you, then it is my opinion that this is objectively the best bottle on the market.

Wrap – Up

The thermos is one of the best inventions for those of us who spend hours outside with no access to the refrigerator, and all 3 of these will keep your drink cool for the entire day.

Looking for more recommendations? Find more great insulated containers for cold drinks here.

If you were to ask my advice, I would say to go with the Thermos Stainless King. It holds the most liquid out of any of these, and it gives you roughly the same amount of temperature retention as the Yeti. When you combine that with the price of the Stainless King being the least expensive, you can quickly conclude that it is the best all around bottle.

Plus “Thermos” literally invented the thermos. You can’t go wrong with the original.

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Kitchen Professor author
About the Author: David McLemore

David learned to cook at an early age after his mother told him that he couldn't live on pizza forever, Dave uses his modest kitchen skills to recreate sorely-missed recipes from home and to occasionally make new favorite ones from places he is visiting.

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