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Thermos Funtainer Water Bottle (12 Oz)
Klean Kanteen Insulated Classic Water Bottle (20 Oz)
See Top Ranked Traditional Water Bottles

Thermos Funtainer Water Bottle vs Klean Kanteen Insulated Classic Water Bottle

Analysis:

The Thermos Funtainer Water Bottle (12 Oz) and Klean Kanteen Insulated Classic Water Bottle (20 Oz) make for very strong choices and are great Traditional Water Bottles for their respective $9 and $30 asking prices. Depending on how much you're willing to spend, either of these options will serve you well.

Two highly trusted sources that perform well-thought-out in-depth testing consider the Thermos Funtainer Water Bottle (12 Oz) to be a great product - it earned the "Top Pick" title from Wirecutter (NYTimes) and "Nice Insulated Stainless Straw Sipper" from BabyGearLab in their respective Traditional Water Bottle roundups, which is a good indication of it being a notable product.

As for the Klean Kanteen Insulated Classic Water Bottle (20 Oz) - it was really well-received by reviewers at Tom's Guide, a great source that's known for conducting high-quality in-depth testing. It performed great in its "Best water bottles 2020" roundup and was named its "Runner Up for A solid runner-up", which, on its own, makes it a product that warrants a closer look.

As a last step, we wanted to do a head-to-head Thermos Funtainer Water Bottle (12 Oz) vs. Klean Kanteen Insulated Classic Water Bottle (20 Oz) comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.

Comparison of expert ratings
Highly Recommended
Recommended
Mentioned
Not Mentioned
Wirecutter (NYTimes)
BabyGearLab
Tom's Guide
The Bump
Business Insider
BestReviews
New York Magazine
Reddit
Tech. Specs Comparison
Thermos Funtainer Water Bottle (12 Oz)
$9
Klean Kanteen Insulated Classic Water Bottle (20 Oz)
$30
Capacity
12 (fluid oz)
20 (fluid oz)
Double Wall
Yes
Yes
Filter
No
No
Infuser
No
No
Water Bottle Material
Stainless Steel
Stainless Steel
Highly recommended by trusted experts
Wirecutter (NYTimes)
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best Overall
in “The Best Kids Water Bottles” 
Last updated: 5 Aug 2019
BabyGearLab
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Nice Insulated Stainless Straw Sipper
in “The Best Kids Water Bottle” 
Last updated: 9 Mar 2020
Recommended by trusted experts
Tom's Guide
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Runner Up
in “Best water bottles 2020” 
Last updated: 23 Nov 2019

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