Can you not store milk in these? Looking for a way to keep my son's soy milk cold without lugging an ice pack.

You can definitely put milk in this thermos, but to keep it ice cold you need a water bottle ice pack (the myColdCup ones on Amazon). These work really well because the ice pack is put *inside* the thermos (rather than a bulky ice pack outside), so it does not need to be nearly so big to have the same cold effect. One ice pack in this 12 oz thermos will keep the milk really ice-cold for more than 8 hrs. He will love it!

is this bottle leakproof?

Yes, is is leakproof. If the top is screwed on correctly (not misthreaded) and the straw is pulled through tight, it will NOT leak. The few times we’ve had it leak is due to user error. Though it will obviously leak (little dribbles) if the top is not closed and the bottle is turned upside down or laid on its side. For reference, we’re probably going to buy this for the third time in two years because it keeps getting lost. It’s leak proof and easy to clean (no mold).

Can this bottle be filled with hot water and keep the water warm for hours?

No. It says that ON THE BOTTLE. It’s not for hot liquids

Can i use it for milk

Yes, this could be used for milk, or any other cod beverage.

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THERMOS FUNTAINER Water Bottle with Straw, 12oz, Gabby’s Dollhouse

THERMOS FUNTAINER Water Bottle with Straw, 12oz, Gabby’s Dollhouse

Product ID: 421908141

Details

Brand
THERMOS
Capacity
12 ounces
Color
Gabby's
Recommended Uses For Product
Water
Special Feature
Cold 12 Hours

💧Leak-proof flip-top straw

❄️12-hour cold retention

🛡️Durable 18/8 stainless steel

¥7131

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Description

❄️ Sip Cool, Stay Ahead: The Ultimate Kid’s Hydration Sidekick!

STAY CHILL ALL DAY - Vacuum insulation keeps drinks cold up to 12 hours—hydrate like a pro, no matter the hustle.
CLEAN SAFE ALWAYS - Removable, hygienic silicone straw and dishwasher-safe design—because clean hydration is smart hydration.
ICONIC TRUST SINCE 1904 - Thermos heritage means reliability you can count on—join millions who never compromise on quality.
BUILT FOR ROUGH TUMBLE - Premium 18/8 stainless steel resists drops and dings—because life’s too busy for fragile gear.
KID APPROVED CONVENIENCE - Push-button flip-top with integrated soft-touch handle—easy grip, easy sip, zero spills.

The THERMOS FUNTAINER 12oz water bottle combines advanced vacuum insulation technology with durable 18/8 stainless steel to keep drinks cold for up to 12 hours. Designed with kids in mind, it features a leak-proof flip-top straw, an integrated soft-touch carry handle, and a compact size perfect for backpacks and cup holders. BPA-free and dishwasher safe, this bottle offers hygienic, easy cleaning and trusted Thermos quality since 1904—making it the go-to hydration companion for active kids and busy parents alike.

Specifications

ASIN	B09WGGCQHP
Additional Features	Cold 12 Hours, Double Wall, Durable, Vacuum Insulated
Age Range Description	Kid
Base Diameter	2.7 inches
Best Sellers Rank	#78 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #5 in Insulated Bottles
Brand Name	THERMOS
Cap Type	Flip Top Cap
Capacity	12 ounces
Color	Gabby's Dollhouse
Customer Reviews	4.7 4.7 out of 5 stars (37,890)
Included Components	kids water bottle
Item Dimensions W x H	3.1"W x 6.9"H
Item Type Name	insulated-beverage-bottles
Manufacturer	THERMOS
Material Type	Stainless Steel
Model Name	FUNTAINER Water Bottle with Straw 12 Ounce
Number of Items	1
Pattern	Licensed Characters
Product Care Instructions	Top Rack Dishwasher Safe
Recommended Uses For Product	Water
Theme	Cartoon
UPC	041205754244
Unit Count	1 Count

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¥7131

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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