Thermos Stainless King SK1005MB4 16-Ounce Leak-Proof Travel Mug, Midnight Blue

Thermos Stainless King SK1005MB4 16-Ounce Leak-Proof Travel Mug, Midnight Blue
by Thermos

Thermos Stainless King SK1005MB4 16-Ounce Leak-Proof Travel Mug, Midnight Blue
List Price: $27.99
Our Price: $18.87
You Save: $9.12 (33%)
Availability: Usually ships in 3-4 business days
Buy Used: from $15.99 (click here)
Category: Kitchen
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Product Summary

Manufacturer: Thermos
Brand: Thermos
Model: SK1005MB4
Color: Blue
Product features:
  • Ultra-durable travel mug for hot and cold beverages; 16-ounce capacity
  • Unbreakable stainless steel interior and exterior
  • Leak-proof Drinklock sealing lid
  • Stays cool to the touch with hot liquids and is condensation-free with cold
  • Hand wash only

Kitchen and Housewares Reviews of Thermos Stainless King SK1005MB4 16-Ounce Leak-Proof Travel Mug, Midnight Blue

Customer Review: Several Different Thermos Mugs Compared
Summary: 1 Stars

This review is a comparison between four Thermos mugs that I have, which I hope should explain why I don't give this one '5 stars'.

Thermos 16-Ounce Leak-Proof Travel Mug
Overall, I like this 'E5' the best. It's greatest shortcoming is that it does not fit in many car cup holders. Unless you have a 'big gulp' sized cup holder, this will not be secure in the car. Inside, it has a narrow mouth, which isn't too big a deal sticking tea bags or coffee bags into, or getting them out of (just invert & shake a bit). The lid is pretty much one plastic piece with two seals, with no 'hidden' nooks and crannies to capture yucky stuff. I've had these mugs for over a year and washed all of them in the dishwasher countless times, and they always seal well and work well. I can shake boiling hot liquid in it upside down or put it in a backpack and not lose a drop. Though if you have been drinking from it, the top usually has some leftover drops of drink in it to spill after you seal it. Of all of these mugs, this seems to work the best keeping hot drinks hot.

UPDATE: I figured out how to make this one fit in more car cup holders: The bottom comes off! Afterward, you can snug-fit the bottom back on for desktop use, or pop it back off to wash or use in the car. I've had a few of these for a few years, and they work perfectly.

Thermos Nissan 14-Ounce Leak-Proof Insulated Travel Mug
This one works about as well as any the others. It fits in every cup holder. The big handle is usually more in the way than useful. It holds a little less drink. The all-plastic lid with one seal comes apart into two pieces to clean, and can be annoying to snap back together. It has the simplest design, and is the least expensive, and seals perfectly every time. This one can be shaken upside down, and carried in a backpack. It's hard to tell with this mug when you've filled it 'too much'. I routinely end up trying to twist it closed with my fingertips immersed in hot drink.

Thermos Stainless-Steel 22-Ounce Leak-Proof Hydration Bottle
This is for cold drinks ONLY. There is no way to sip a hot beverage, so if it's scalding hot, you will burn yourself. That said, it keeps cold drinks really cold all day, and the pop-top lid is really nice, keeping the part that you touch with your lips clean of debris in environments where the other mugs collect dust and such and become cruddy. It seals perfectly, and the secondary catch works flawlessly to keep it from accidentally opening without being a hassle. This can be thrown into a backpack without any worries. It is exactly the same form factor as the other 'E5' mug, but taller, so it won't fit into most cup holders, but the lid is so secure you can toss it anywhere and not worry about it. Sadly, the tops are not interchangeable between this and the other 'E5' mug. People talk about how ice stays frozen in this for days, but really, you never need ice. If the drink you put in was cold, it will stay cold all day without ice. Ice tends to just fuse together inside and take up space.

Thermos Stainless King 16-Ounce Leak-Proof Travel Mug, Midnight Blue
This one is only 'OK'. It fits in every cup holder, and holds enough of whatever it is you're drinking and like every other thermos mug, keeps it hot/cold for hours. On the down side, when the water's still very hot, agitating the mug will tend to cause it to shoot out of every seam, and if it gets in the threads of the lid, it will carry on dribbling long after you think it's 'under control'. So, it's downright leaky, not 'leak proof'. The seal works OK once the liquid has cooled down a bit, but after the first week of use it never passes the 'upside-down' test like the other cups without dribbling. The lid comes in LOTS of little pieces that ALL collect residue, and I have to disassemble it and stuff all the parts in the silverware tray to keep them from touring the inside of the dishwasher. (And YES, I do put it back together right.) Unlike the other mugs, this has no plastic/rubber exterior parts, which is actually a minor annoyance, as it rattles audibly in my car cup holder, which also doesn't have any rubber parts. There's a hook on the bottom of the lid, presumably for a tea bag string, but I always just remove the strings.

Update: NOT OK! Seal's basically ineffective after just a few months' use. It's now an expensive dribble cup. Three stars to one. Rubbish compared to ANY other Thermos branded mug.


One common feature of all of these is that any 'cream' drink, or powdered drink mix becomes a mess. You can't leave any dairy products in the mug or the calcium will amalgamate with the stainless steel, permanently staining it. So drink up and rinse it out promptly, or learn to enjoy your coffee as I do, black. Anything much thicker than water will collect all over the nifty lids and form a layer of yuck. It cleans off, but... yuck.

My usual routine with these mugs is to remove the string from, then stuff a tea bag or Folgers Coffee Bag into the mug, and pour hot water in directly from the kettle. I never remove the bag until after I've drunk it all, which usually takes a good, long time. If you're supposed to be restricting your caffeine intake, this will help. You'll literally drink one cup of sipping-hot coffee all day.

Description of Thermos Stainless King SK1005MB4 16-Ounce Leak-Proof Travel Mug, Midnight Blue

The Thermos brand is well known as the quality and performance leader in insulated food and beverage products. The Stainless King series creates a new chapter in Thermos' storied history with a modern line that blends our newest technology with a dash of the past. The Stainless King Food Jar has TherMax double wall vacuum insulation for maximum temperature retention, hot or cold. The unbreakable stainless steel interior and exterior keeps drink cool to the touch with hot liquids and sweat proof with cold liquids. The Leak Proof Mug has a Capacity of 16-ounce/.47L

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