Today I'm reviewing my favorite Thermos insulated stainless steel travel cups.
I use mine every day, whether I'm at home, at work, or on the road. Staying
hydrated is important to everyone's health and wellness. If you're on a keto
diet or low carb diet, you need to drink even more water to help avoid damage
to your kidneys. So, to help me drink enough water daily, I keep a
Thermos Stainless King Vacuum-insulated Stainless Steel Travel Tumbler
and a Thermos stainless steel hydration bottle next to me so I can take sips
of water and hot or cold decaf or green tea throughout the day and refill the
containers as needed.
Several years ago, my husband and I decided to replace our motley collection
of plastic and probably BPA-laden water bottles and travel mugs (most of them
free swag from employers and trade shows) with high quality, vacuum-insulated
stainless steel bottles and mugs that had the features we care about.
We really liked our new
Thermos stainless steel hydration bottles, so we ordered two Thermos Stainless King Travel Tumblers to try out. We loved them so much that we ordered three more, one for
my husband's office, one for my office and an extra for home. So, we now have
six of these wonderful stainless steel travel cups, in Electric Blue,
Cranberry, Midnight Blue, Raspberry, Matte Black and Matte Stainless Steel.
Note: The colors avaible change periodically, so several of the colors
we have are no longer available and have been replaced by newer
shades.
Prefer a Travel Mug With a Handle?
The
Thermos Stainless King Travel Mug
is identical to the travel tumbler except it has a handle.

Why I Love Thermos Stainless King Travel Tumblers and Travel Mugs
Large Capacity
Both the stainless steel travel tumbler and the travel mug version with the
handle hold a generous 16 ounces of your favorite hot or cold beverage. Both the
tumbler and the mug are 7.8" tall and 3.3" wide (excluding the handle on the
travel mug), tapering down to 2-5/8" wide at the base so they fit in most cup
holders.
Keeps Hot Drinks Hot and Cold Drinks Cold
I love being able to use my Thermos travel tumbler for hot or iced tea or
coffee, hot or chilled apple cider, hot cocoa, cold milk or any other
non-carbonated drink I'm in the mood to drink.
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Thermos' Vacuum Insulation Technology
The most important criterion in choosing a travel mug or tumbler is how long
it can maintain the temperature of whatever beverage you put into it.
Thermos’s vacuum insulation technology and double-wall stainless steel
construction mean that hot drinks stay hot for up to 7 hours and cold drinks
stay cold for up to 18 hours if you preheat or pre-chill the travel tumbler
with hot or cold water for 5 to 10 minutes just before filling it with your
beverage.
Travel Tumbler Exterior Stays at Room Temperature
Whether you fill it with a hot or cold beverage, the outside temperature of
the tumbler is not affected by the temperature of its contents. (Of course, if
you take it outside on a very hot or very cold day, the exterior of any metal
container will get hotter or colder, based on the temperature of its
environment.)
No "Sweating" Even When Filled With Ice-Cold Drinks
Even if you fill it with ice cubes and a cold beverage, this stainless steel
travel tumbler doesn't "sweat" — i.e., condensation doesn't form on the
outside of the mug. So, I never have to use a coaster under this tumbler to
protect my antique mahogany dining table, coffee table or end tables.
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The DrinkLock sealing lid has two openings
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Leak-proof Lid
Thermos' DrinkLock sealing lid makes this travel mug leak-proof (unless you
don't close the lid properly or reassemble it correctly after taking it apart
for cleaning).
Dual Openings for Easy Access
There are slots on opposite sides of the lid that are controlled by a single
lever. Sliding the lever to the side opens or closes both drinking slots
simultaneously. So, when you pick up this travel tumbler, one of the openings
will be no more than 1/4 turn away from your mouth.
Built-in Tea Bag Hook
The underside of the lid has a clever built-in hook for wrapping a tea bag
string around or attaching the chain of a loose-leaf tea infuser.
Attractive and Functional Design
This vacuum-insulated stainless steel travel tumbler's graceful shape not only
looks good but also feels good. The narrower "waist" (where the Thermos logo
is) makes it easier for my small hand to hold this wide cup securely.
Hand-washing is recommended and the surface colors and finishes stay looking
great for years if you don't put these mugs in the dishwasher. There's also a
selection of colors to choose from that changes from time to time. (I wish
they still made the Electric Blue!)
Follow the Care and Use Instructions to Enjoy Your Thermos Stainless Cups
For Many Years
We bought the oldest of our Thermos travel tumblers, the Cranberry and
Midnight Blue ones, in 2015. As you can see, after four years they've held up
extremely well. However, to keep your Thermos travel tumbler or mug looking
and functioning well, it's important to follow the manufacturer's care and
usage instructions.
Hand Wash Your Cup in Warm, Soapy Water
Although these Thermos stainless steel travel tumblers and mugs are top-rack
dishwasher safe in terms of their function, the company recommends hand
washing them with mild soap and warm water to preserve their attractive
appearance.
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Worn finish on bottom edges of Cranberry cup after
dishwasher vs. like-new finish on hand washed blue cup
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A few months ago, I found out the hard way what happens if you wash one in
your dishwasher. I was feeling lazy and decided to put our Cranberry tumbler
in the top rack of the dishwasher as an experiment. After washing it in the
dishwasher this way a few times, I realized that the shiny, colorful finish
had begun to wear off around the edges on the bottom of the cup.
Fortunately, the finish on the sides of the Cranberry tumbler still looks fine
and the bottom hasn't gotten any worse since I went back to hand washing it.
You can see in the photo that the bottom of my Royal Blue cup, which has
always been hand washed, still looks like it did the day it arrived from
Amazon.
I hand wash my Thermos travel tumblers with mild yet effective sulfate-free
Puracy Natural Liquid Dish Soap, a soft sponge and long-handled
OXO Good Grips Bottle Brush.
Don't Use Cleansers That Are Abrasive or Contain Chlorine Bleach
Abrasive cleansers (including dishwasher detergents), scrubbing sponges, etc.,
can dull or even wear away the finish on your Thermos travel tumbler or mug.
(That is exactly what happened to the bottom of my Cranberry cup after I
washed it in the top rack of my dishwasher a few times.)
The company also says not to use bleach or any products containing chlorine on
these containers. Over time, some beverages, such as tea, can stain the gasket
and seal if the lid is not washed promptly and thoroughly.
Fortunately, replacement gaskets and seals
are available.
If You Disassemble the Lid For Cleaning, Make Sure to Reassemble It
Correctly
I don't disassemble the lid every time I wash my travel tumbler, but I do so
fairly frequently to make sure I've cleaned it thoroughly. If you don't
reassemble it correctly, your travel mug won't be able to maintain the
temperature of your beverages as well and the lid may leak. I highly recommend
reading and following the
Thermos Vacuum Insulated Mug and Tumbler Care and Use Guide.
Thermos Stainless King vacuum-insulated stainless steel travel tumblers
and mugs
reviewed by Margaret Schindel
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