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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FUNTAINER Water Bottle with Straw, 12oz, Princesses

Product ID: 349275642

Details

Brand
THERMOS
Capacity
12 ounces
Color
Princess
Recommended Uses For Product
Water
Special Feature
Cold 12 Hours

💧Leak-proof with hygienic straw

❄️12-hour cold retention

🛡️18/8 stainless steel durability

¥6958

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

❄️ Keep it cool, keep it royal – hydration fit for a little queen!

CLEAN SAFE - Removable, covered silicone straw is BPA-free and dishwasher safe for hassle-free hygiene.
ICONIC FUN - Princess-themed design that fits standard cup holders—hydration meets style and nostalgia.
STAY CHILL ALL DAY - Vacuum insulation keeps drinks cold up to 12 hours—no more lukewarm sips!
EFFORTLESS HYDRATION - Push-button lid with integrated soft-touch handle makes sipping and carrying a breeze.
BUILT FOR ROUGH TUMBLE - Premium 18/8 stainless steel resists drops and dings, perfect for active kids.

The THERMOS FUNTAINER 12oz Princess water bottle combines advanced double-wall vacuum insulation to keep drinks cold for 12 hours with durable 18/8 stainless steel construction. Designed for kids, it features a leak-proof flip-top lid, hygienic removable straw, and a soft-touch carry handle. Lightweight and compact, it fits standard cup holders and backpacks, making it the perfect hydration companion for school, sports, and everyday adventures—all wrapped in a charming princess-themed design.

Specifications

ASIN	B0968ZG4TJ
Additional Features	Cold 12 Hours, Double Wall, Vacuum Insulated
Age Range (Description)	Kid
Age Range Description	Kid
Base Diameter	2.7 inches
Best Sellers Rank	#44 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #5 in Insulated Bottles
Brand	THERMOS
Brand Name	THERMOS
Cap Type	Flip Top Cap
Capacity	12 ounces
Color	Princess
Customer Reviews	4.7 out of 5 stars 37,814 Reviews
Global Trade Identification Number	00041205750468
Included Components	kids water bottle
Item Dimensions W x H	3.1"W x 6.9"H
Item Type Name	insulated-beverage-bottles
Item Weight	8 ounces
Manufacturer	Thermos
Material Type	Stainless Steel
Model Name	FUNTAINER 12 Ounce Bottle
Number of Items	1
Pattern	Licensed Characters
Product Care Instructions	Top Rack Dishwasher Safe
Recommended Uses For Product	Water
Special Feature	Cold 12 Hours, Double Wall , Vacuum Insulated
Theme	Cartoon
UPC	041205750468
Unit Count	1 Count

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