Hello Kitty Thermos Brand Child’s Insulated Stainless Steel Water Bottle: Lead-Free in all accessible components.
Hello Kitty Thermos Brand Child’s Insulated Stainless Steel Water Bottle:
Lead-Free in all accessible components when tested with an XRF instrument.
Here’s a link to a product similar to this on Amazon.*
These are the test results of the product as is (assembled). Without disassembly there is no way for me to know if there is a leaded sealing dot under the pink bottom cap HOWEVER with the Thermos Brand products I have not once heard of the bottom cap popping off with normal use as intended.
With other brands (specifically Pura Kiki and similar products) the bottom cap has been reported to come off with normal use, revealing a Leaded sealing dot (a dot of solid Lead used to create the vacuum of the stainless steel for the insulative properties.)
You can see some examples of products with a Leaded sealing dot by clicking HERE.
XRF test results for the Hello Kitty Insulated Stainless Steel Thermos Brand water bottle pictured here on this post:
Pink Plastic Base (image above):
- Lead (Pb): Non-Detect / Negative
- Cadmium (Cd): Non-Detect / Negative
- Arsenic (As): Non-Detect / Negative
- Mercury (Hg): Non-Detect / Negative
- Bromine (Br): Non-Detect / Negative
- Zinc (Zn): 392 +/- 24 ppm
- Copper (Cu): 39 +/- 18 ppm
- Nickel (Ni): 21 +/- 13 ppm
- Iron (Fe): 171 +/- 36 ppm
- Titanium (Ti): 1,615 +/- 405 ppm
Stainless Body:
(Metal-304)
- Lead (Pb): Non-Detect / Negative
- Cadmium (Cd): Non-Detect / Negative
- Arsenic (As): Non-Detect / Negative
- Mercury (Hg): Non-Detect / Negative
- Barium (Ba): Non-Detect / Negative
- Chromium (Cr): 150,600 +/- 1,100 ppm
- Tin (Sn): 336 +/- 64 ppm
- Copper (Cu): 1,105 +/- 437 ppm
- Nickel (Ni): 87,500 +/- 1,700 ppm
- Iron (Fe): 744,700 +/- 2,500 ppm
- Vanadium (V): 914 +/- 200 ppm
- Titanium (Ti): Non-Detect / Negative
- Cobalt (Co): Non-Detect / Negative
- Magnesium (Mn): 10.900 +/- 1,300 ppm
Painted Area:
(multiple areas tested with similar results, results are primarily of the Stainless Body/ stubstrate)
- Lead (Pb): Non-Detect / Negative
- Cadmium (Cd): Non-Detect / Negative
- Arsenic (As): Non-Detect / Negative
- Mercury (Hg): Non-Detect / Negative
- Barium (Ba): 757 +/- 181 ppm
- Chromium (Cr): 137,700 +/- 1,100 ppm
- Tin (Sn): 347 +/- 62 ppm
- Copper (Cu): 1,524 +/- 426 ppm
- Nickel (Ni): 81,900 +/- 1,600 ppm
- Iron (Fe): 705,200 +/- 2,500 ppm
- Vanadium (V): 2,944 +/- 429 ppm
- Titanium (Ti): 47,200 +/- 1,000 ppm
- Cobalt (Co): 6,301 +/- 1,441
- Magnesium (Mn): 14,300 +/- 1,400 ppm
As always, thank you for reading and for sharing my posts.
Please let me know if you ever have any questions.
Tamara Rubin
#LeadSafeMama
*Amazon links are affiliate links. If you purchase something after clicking on one of my links I may receive a small percentage of what you spend at no extra cost to you. Than you for supporting my advocacy work in this way. 
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So, generally speaking, is Thermos a good brand for travel mugs?
I think so. I have not seen the bottom cap of one fail. Lead cannot be detected through the bottom cap. That does not mean that lead is not there, but if it is there it is likely inaccessible. I think they are generally a good brand, although I would like to disassemble one to see if there is lead used before choosing to purchase one for my family.
The bottom of my kids thermos cups like these pop off all the time. They are just glued on plastic bases that loosen over time. Ours does have what looks like a lead sealing dot under the plastic base although I guess it could be a lead free solder. I swabbed it with a lead check & it was negative, not sure if that is accurate given the use. We also have some of the “adult” thermos cups which have never had issues with the bottom falling off, those are metal bases though not plastic like on the kids cups.
Hi Kayleigh! Thank you for the feedback on these!
Tamara
My child is 4.5 y o and this summer the SS Thermos popped the bottom off. We have had it less than 3.5 years, and it’s only been in a dishwashing machine a few times at Grandma’s house; we don’t have a dw so everything is hand washed at home. It went to preschool (school-year only, not at school in summer), and we only put water in so it only gets washed really well once a week or so, otherwise just a good straw cleaning. Mouth portion only of the straw components needed to be replaced after about 2 years due to basic wear from the lid. The bottom green cap started spinning about a year ago, which I ignored bcz the bottle was still fully functional. This summer, it finally bit the dust 🙁 we will need a new one for pre-k this fall.
In general, it seems to be a really sturdy product overall and I will probably look to buy another of the same kind. The replacement straw/drinking pieces were from Amazon, and worked correctly. We have been highly satisfied with this product and recommend it.
A note: we live in Phoenix, Az, and have some really hot summers, and the inside temps in a vehicle during summer can reach well over 150deg F, so that being said, there were probably many days it got left in the vehicle, including some of those high temp days, and that definitely could have contributed to loosening of the bottom cap, as well as a toddler/preschooler dropping it on regular occasion. I certainly don’t attribute this part coming off to anything specific to the company. Just regular every day heavy (small kid) usage 🙂
I have photos if Author would like to see them and post them 🙂
Hi Tamara,
Have you had an chance to test the sealing dot of the kids thermos yet?
Thank you
My daughter’s thermos funtainer has a raised circle inside on the bottom. Is this an indent from the solder dot? Her last one didnt have one
Did you ever find out about this? I just bought a replacement thermos water bottle and noticed this new design has the dot also.
According to the company itself, they do not use lead solder on these cups.
They lie.
I like the Thermos funtainers for my kids. They are easy to wash, but they do have silicone drinking spout/straws… because of the issue with silicone, I will be looking for an alternative.
Curious what the issues with silicone are? We use these bottles daily, I find them easy to clean and they aren’t all plastic like most bottles. Thank you!
Some silicone items contain cadmium, which Tamara mentions is a carcinogen. I am not sure if these spouts are cadmium free or not though.