Best Glass Lined Thermos | A List from The Expert for 2022

Glass Lined Thermos

Most vacuum insulated bottles and tumblers are made of stainless steel these days, but there is a trend for ceramic and glass lined thermoses that can keep things cold or hot but don’t impart a metallic flavor into your drink.

Because they are still not generally accessible and might be difficult to acquire, I decided to compile a list of the finest glass lined thermoses.

To be entirely honest, this is more of a list of the “only” than a list of the “best.” There aren’t many firms that make them anymore, but there are several alternatives.

They are no longer routinely manufactured since they are highly delicate, and since the 1960s, stainless steel has supplanted glass as the preferred material. There are, however, certain glass thermos sizes still available if you know where to search.

ImageProduct NameEditor's RatingPrice


Thermos Add-A-Cup Glass Vacuum 35 oz
Thermos Add-A-Cup Glass Vacuum 35 oz











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Thermos 17 oz Arc Series Glass Vacuum
Thermos 17 oz Arc Series Glass Vacuum











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Thermos 35 oz Arc Series Glass Vacuum
Thermos 35 oz Arc Series Glass Vacuum











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Thermos Glass Vacuum 2-Quart Pump Pot
Thermos Glass Vacuum 2-Quart Pump Pot











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Alfi Glass Vacuum Frosted Plastic Carafe
Alfi Glass Vacuum Frosted Plastic Carafe











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Glass Lined Thermos: The Original and The Best

Glass Lined Thermos: The Original and The Best

According to Thermos, the first glass vacuum flask was produced in 1892, and the first residential glass walled Thermos was created and sold in 1903.

This was a glass vacuum flask having an inner and exterior glass bottle separated by a vacuum. The inner glass flask is then protected by an exterior layer of metal.

Until 1966, when the first stainless steel vacuum insulated flask was manufactured, almost all Thermoses and vacuum insulated flasks were glass walled.

In most circumstances, stainless steel is favored over glass because it is less brittle, less expensive to manufacture, and does not leach chemicals into hot drinks as plastic does.

With the introduction of the Hydro Flask in 2008 and the release of tumblers by Yeti in 2014, as well as a shift away from plastic, vacuum insulated tumblers and bottles gained in popularity to the point that practically everyone now has one. For more suggestions, you can read about Bread Boxes Plastic.

Why Get a Glass Lined Thermos?

Why Get a Glass Lined Thermos

Because stainless steel vacuum insulated tumblers and bottles are so popular, some individuals (including my spouse) complain that the metal lends a metallic flavor to their beverages.

They want the durability of a stainless steel insulated bottle, but they also want a glass (or ceramic) inner lining so that no tastes are transmitted into their drink.

People are returning to glass-lined thermoses and ceramic-lined choices in limited numbers. Additionally, you can check our review on Catfish Skinners.

The Downsides To Glass Lined Thermoses

The Downsides To Glass Lined Thermoses

The image above is from the care instructions for a glass Thermos. As you can see, it contains glass breakage warnings and even recommends against placing ice cubes in it since “anything other than liquid might cause glass breaking.”

The main disadvantage of glass Thermoses over stainless steel or ceramic Thermoses is its proclivity to break.

A vacuum generates a great deal of inward pressure. A slight fracture or scratch in the glass can occasionally cause it to shatter and implode, resulting in thousands of tiny shards of glass in your drink.

The stainless steel casing protects it from some external damage, but even a minor drop or fast temperature shift might cause the Thermos to break.

Because stainless steel is just as inexpensive to produce and far safer and less prone to cracking, glass-lined Thermoses are becoming obsolete.

However, as more people seek glass-lined insulated tumblers and water bottles, it may experience a revival.

The Best (and Only) Glass Lined Thermoses

I was able to locate a couple glass coated vacuum insulated Thermos bottles that are still available for purchase on Amazon today.

I’ve included some details about each and listed some benefits and drawbacks, as well as direct links to the product on Amazon if you wish to purchase it.

Finding and searching for these things is difficult, and I struggled to find them, so perhaps this helps. They are affiliate links, so if you buy something through them, I will receive a tiny compensation, which I appreciate.

The following are the top glass-lined Thermos options:

1. Thermos Add-A-Cup Glass Vacuum 35 oz

Thermos Add-A-Cup Glass Vacuum 35 oz

The largest size bottle available is the Add-A-Cup Glass Vacuum Thermos, which has a protective plastic covering and a strong carry handle.

The lid unscrews to reveal two plastic cups to drink from, and the twist top stopper flips up to reveal a cup or a dry storage container for items like sugar, coffee, or tea bags.

The stopper may also be partially unscrewed and poured out of.

This is the most adaptable alternative, and it is exceptionally well priced, as are all of these glass coated Thermos flasks, even less than its stainless steel version.

PROS:

  • It includes many mugs.
  • The stopper provides dry storage.
  • The outside is made of tough plastic, and the carry handle is robust.

CONS:

  • There is only one color.
  • It is rather huge to transport.

2. Thermos 17 oz Arc Series Glass Vacuum

Thermos 17 oz Arc Series Glass Vacuum

This 17 oz glass vacuum insulated tumbler is a more personal and compact size.

It has a comfy rubber grip, and the lid serves as a tea cup with a handle for convenient drinking of tea, coffee, water, or whatever liquid you’re carrying with you.

For personal usage, this is the greatest glass-lined coffee thermos. I can see me sipping a barista-made coffee from this bad boy and it staying hot for hours with no metallic flavor.

This is also the least expensive form, and it is less expensive than the other versions.

PROS:

  • A smaller size is easier to transport.
  • The lid also functions as a cup with a handle.

CONS:

  • Fragile and easily broken
  • Some folks may find it too tiny.

3. Thermos 35 oz Arc Series Glass Vacuum

Thermos 35 oz Arc Series Glass Vacuum

This glass vacuum tumbler, like the 17 oz size shown above, features a strong rubber grip and a lid that serves as a cup with a handle.

The outside is composed of a protective plastic (rather than metal), and it measures 35 oz.

PROS:

  • Lid serves as a cup with a handle in the larger 35 oz version.
  • Flavors will not be imparted by the glass on the inside.

CONS:

  • The exterior is made of plastic rather than metal.
  • Only available in blue or red (not the sexiest colors)

4. Thermos Glass Vacuum 2-Quart Pump Pot

Thermos Glass Vacuum 2-Quart Pump Pot

The Thermos Glass Vacuum Pump Pot is a medium-large pot ideal for keeping boiling water, tea, or coffee for group occasions.

It has a 2-quart (64-ounce) capacity and can keep beverages hot for up to 12 hours or cold for up to 24 hours.

The top simply latches on and is safe, but it also features a handy hand pump that allows individuals to portion out how much drink they want.

It has a handy carry handle and the outside does not get hot, so no one gets burned.

PROS:

  • The large 2-quart capacity is ideal for parties.
  • Handle for easy transport
  • Easy-to-use hand pump for portion control

CONS:

  • Only particularly handy for huge groups of people.
  • Too delicate to bring on a picnic.

5. Alfi Glass Vacuum Frosted Plastic Carafe

Alfi Glass Vacuum Frosted Plastic Carafe

Thermos owns the “Alfi” trademark, which produces carafes in a variety of pricing levels. From cheap plastic ones that cost less than $20 to expensive ones that cost hundreds of dollars.

They each feature a glass inside and are ideal for serving anything from coffee or tea to wine or water in a more formal environment.

There are several options and designs available to suit any budget.

PROS:

  • Ideal for presenting drinks at more formal occasions.

CONS:

  • It is neither leak proof nor portable.

6. EWater Glass Lined Vacuum Flask

EWater Glass Lined Vacuum Flask

Aside from Thermos, this EWater glass walled vacuum insulated container is one of the few manufacturers with a glass liner that I could discover.

This company differs from Thermos in its approach. Instead of two glass flasks with a vacuum in between and a protective metal coating on the exterior, they constructed a double-walled stainless steel container with the vacuum in between the two metal walls. The stainless steel was then lined with a thin glass lining.

It has a high boron glass lining, so there will be no metal leeching into your liquids.

The disadvantage of this design is that the internal glass is readily broken by unexpected temperature fluctuations or even the tiniest drop. In reality, a glass water bottle would be more durable than this.

This is truly intended for indoor usage, and I can see it being ideal for preparing coffee at home or at the office and keeping it warm for hours as you work or go about your day.

It may also be suitable for coffee or tea on your daily commute, but it is not suitable for heavy transit, particularly where it may be dropped or bashed around since it may break.

PROS:

  • Stainless steel bottle with a glass lining that is insulated.
  • There is no metallic flavor.

CONS:

  • Glass is still delicate and easily broken.
  • Only available in tiny sizes
  • Only for internal usage or calm commutes

7. Benecasa Thermos Glass Lined 1L

Benecasa Thermos Glass Lined 1L

It’s unusual to come across another glass vacuum thermos, so I was delighted to discover this one as an alternative to the Thermos brand.

It has a protective exterior plastic bottle that comes in four different colors: blue, green, red, and black.

It’s portable, and the lid functions as a cup with a lid. It’s reasonably priced and a viable alternative to the Thermos.

PROS:

  • Stainless steel bottle with a glass lining that is insulated.
  • There is no metallic flavor.

CONS:

  • Glass is still delicate and easily broken.
  • Only available in tiny sizes
  • Only for internal usage or calm commutes

Frequently Asked Questions

Best Glass Lined Thermos

1. What is the purpose of the glass in a thermos?

We’re all aware that thermoses can keep your beverages cool or hot for an extended period of time. Glass-lined thermoses are superior to standard types.

The glass layer is added to improve thermos insulation. It acts as a mirror, reflecting infrared radiation and keeping the beverage at the proper temperature.

2. Why isn’t my thermos staying warm?

If your thermos is no longer keeping your beverages warm, you have most likely damaged it. Most thermoses aren’t as long-lasting as the ones I discussed in this article. Dropping them can cause dents in the thermos, undermining the function of the thermos. The thermos can easily be damaged and lose effectiveness if not properly protected.

3. Which thermos keeps the most heat?

You’ve come to the correct spot if you’re wondering which thermos will keep your beverage hot the longest. All of the glass lined thermoses I examined are among the best on the market right now.

These thermoses have better heat conduction than other models, allowing you to keep your beverage hot for hours.

4. Is glass a strong heat conductor?

According to several scientific investigations, glass is an outstanding heat conductor. It allows heat to pass through it continuously and uninterruptedly. That is why glass-lined thermoses outperform conventional thermoses. Glass is also effective at shielding the atmosphere from electromagnetic radiation.

5. Is it necessary to pre-heat a thermos?

No, a thermos does not need to be preheated in order to function properly. However, on a frigid winter morning, it’s still safe to do so to keep your beverages heated for longer.

Last Words

As you’ve reached the conclusion of this post, you should have all the knowledge you need to choose the finest glass lined thermos from among the numerous possibilities.

If you are still undecided, keep the following features in mind before making a purchase. Any of the brands on the list will last for several days.