How long does it keep drinks cold?

Thermos rates it for up to 12 hours cold thanks to the double-wall stainless steel. Real-world results depend on how full it is and the room temperature.

Is it dishwasher safe?

Yes, it can go in the dishwasher, but Thermos recommends hand washing to keep the finish and lid parts in good shape.

What age is the 12 oz size for?

It suits toddlers and younger kids. Older kids or long days usually need the 14 oz or larger version.

Does it fit in a lunchbox?

The 12 oz body is slim enough for most kids' lunchboxes and backpack side pockets.

Is $17.99 a good price?

At $17.99 at Amazon as of November 7, 2026, it is at the low end of its recent range across 8 stores. It is a fair price for a bottle that usually sells in the high teens to low twenties.

Are the materials BPA-free?

Yes, Thermos says FUNtainer products are made with BPA-free materials.

What do buyers say about the Thermos FUNtainer 12 oz Insulated Straw Bottle?

Rated 4.4 out of 5 from 53 ratings.

Where can I buy the Thermos FUNtainer 12 oz Insulated Straw Bottle?

9 stores we checked sell it, including Walmart, Walgreens, Amazon, Thermos, Wayfair.

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Thermos FUNtainer 12 oz Insulated Straw Bottle

Best price now

$17.99at AmazonObserved at 1:36 AM

Compared across 8 stores. Prices are checked against each store and labelled with when.

Visit Amazon

Thermos FUNtainer 12 oz Insulated Straw Bottle

Best price now

$17.99at AmazonObserved at 1:36 AM

Compared across 8 stores. Prices are checked against each store and labelled with when.

Visit Amazon

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Our take on the Thermos FUNtainer 12 oz Insulated Straw Bottle

The Thermos FUNtainer 12 oz is a double-wall stainless steel kids' water bottle with a flip-up straw lid. Thermos rates it to keep drinks cold for up to 12 hours, and the BPA-free body is built to survive drops and rough handling. It is dishwasher safe, though Thermos recommends hand washing. At $17.99 at Amazon as of November 7, 2026, it sits at the low end of its recent range, with 8 stores listing it new.

Best forParents packing school lunchesToddlers and young kids who prefer strawsDay trips and sports practiceAnyone wanting a small insulated bottle

Pros

Double-wall stainless steel keeps drinks cold for hours
Flip-up straw lid is easy for kids to open
BPA-free materials
Handles drops and dings well
Dishwasher safe, though hand washing is recommended

Cons

Straw and lid parts can be hard to clean thoroughly
12 oz is small for older kids
Hand washing recommended over dishwasher
Straw spouts can wear or get chewed over time

Thermos FUNtainer 12 oz Insulated Straw Bottle prices at every store

MacrobabyNew
In stock
$18.99+ $8.99 shippingObserved at 1:36 AM
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ThermosNew
In stock
$17.99+ $10.00 shippingObserved at 1:36 AM
Visit Thermos
Macy'sNew
In stock
$18.99+ $10.95 shippingObserved at 1:36 AM
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eBayNew
In stockSold by cottonnbeyond
$31.10Free shippingObserved at 1:36 AM
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AmazonNew
Availability unknown
As an Amazon Associate, Deal.ai earns from qualifying purchases.
$17.99Observed at 1:36 AM
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WayfairNew
Out of stock
$17.99Observed at 1:36 AM
Visit Wayfair
WalmartNew
Out of stockSold by Forza Sports
$17.25+ $6.99 shippingObserved at 2:36 AM
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WalgreensNew
Out of stock
$19.99+ $5.99 shippingObserved at 2:36 AM
Visit Walgreens

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Thermos FUNtainer 12 oz Insulated Straw Bottle price history

Lowest price we've seen: $17.25 on Nov 7 at Walmart. Tracked across 9 stores since Nov 7.

What reviewers say

4.4 / 553 ratings

With 4.4 out of 5 from 53 ratings, buyers mostly like the FUNtainer as a durable kids' bottle that keeps water cold through the school day. Complaints center on cleaning the straw lid and the small capacity.

What people mention

Cold retentionPraisedOwners say drinks stay cold through a school day.
DurabilityPraisedBuyers report it holds up to drops and rough handling.
Straw lidMixedKids find it easy to drink from, but the straw and lid take effort to clean.
CapacityCriticisedSome parents say 12 oz runs out too fast for older kids.
CleaningCriticisedReviewers mention hand washing is preferred and the straw parts are hard to reach.

About the Thermos FUNtainer 12 oz Insulated Straw Bottle

Kids love FUNtainer products, but parents love them even more. The lime green FUNtainer 12 Oz. Stainless Steel FUNtainer Bottle from Thermos keeps drinks cold for up to 12 hours. No make believe required. FUNtainer products are always made with love from BPA-free materials. The double wall stainless steel construction is built to handle drops, dings and assorted roughhousing. To clean, you can pop your FUNtainer water bottle in the dishwasher, but hand washing is recommended.

Specifications

Capacity: 11.83 fl oz, 12 fl oz, 14 fl oz
Actual Color: BlueSource
color: BlueSource
size: 12-OunceSource

Questions and answers

How long does it keep drinks cold?: Thermos rates it for up to 12 hours cold thanks to the double-wall stainless steel. Real-world results depend on how full it is and the room temperature.
Is it dishwasher safe?: Yes, it can go in the dishwasher, but Thermos recommends hand washing to keep the finish and lid parts in good shape.
What age is the 12 oz size for?: It suits toddlers and younger kids. Older kids or long days usually need the 14 oz or larger version.
Does it fit in a lunchbox?: The 12 oz body is slim enough for most kids' lunchboxes and backpack side pockets.
Is $17.99 a good price?: At $17.99 at Amazon as of November 7, 2026, it is at the low end of its recent range across 8 stores. It is a fair price for a bottle that usually sells in the high teens to low twenties.
Are the materials BPA-free?: Yes, Thermos says FUNtainer products are made with BPA-free materials.
Where is the Thermos FUNtainer 12 oz Insulated Straw Bottle cheapest?: At Amazon, for $17.99, as of our latest check.
What do buyers say about the Thermos FUNtainer 12 oz Insulated Straw Bottle?: Rated 4.4 out of 5 from 53 ratings.
Where can I buy the Thermos FUNtainer 12 oz Insulated Straw Bottle?: 9 stores we checked sell it, including Walmart, Walgreens, Amazon, Thermos, Wayfair.