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!

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

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).

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THERMOS FUNTAINER Water Bottle with Straw, 12oz, Butterfly Frenzy

THERMOS FUNTAINER Water Bottle with Straw, 12oz, Butterfly Frenzy

Product ID: 444873365

Details

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

💧Removable hygienic straw

🔒Leak-proof push-button lid

❄️Keeps drinks cold 12 hrs

$44.83

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Description

❄️ Sip in Style, Stay Cool All Day!

CLEAN SAFE - Dishwasher-safe, BPA-free, with a removable straw for hygienic, hassle-free cleaning.
ICONIC TRUST - 120 years of Thermos heritage means reliability you can count on every school day.
STAY CHILL ALL DAY - Vacuum insulation locks in cold for 12 hours—hydrate like a pro.
EFFORTLESS HYDRATION - Push-button flip lid with integrated soft-touch handle—easy grip, easy sip.
KID APPROVED DURABILITY - 18/8 stainless steel resists drops and dings, built for everyday adventures.

The THERMOS FUNTAINER 12oz Butterfly Frenzy water bottle combines advanced vacuum insulation to keep drinks cold for up to 12 hours with rugged 18/8 stainless steel durability. Designed for kids, it features a leak-proof push-button lid, integrated soft-touch handle, and a hygienic removable straw. BPA-free and dishwasher safe, this bottle is a trusted hydration companion backed by Thermos’ 120-year legacy.

Specifications

ASIN	B09WG64Y5V
Additional Features	Cold 12 Hours, Double Wall, Push Button Lid, Vacuum Insulated
Age Range Description	Kid
Base Diameter	2.7 inches
Best Sellers Rank	#7 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #2 in Insulated Bottles
Brand Name	THERMOS
Cap Type	Flip Top Cap
Capacity	12 ounces
Color	Butterfly Frenzy
Customer Reviews	4.7 4.7 out of 5 stars (48,143)
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	4 ounces
Manufacturer	THERMOS
Material Type	Stainless Steel
Model Name	FUNTAINER Water Bottle with Straw 12 Ounce
Number of Items	1
Pattern	Decorated
Product Care Instructions	Top Rack Dishwasher Safe
Recommended Uses For Product	Water
Theme	Animal
UPC	041205753605
Unit Count	1 Count

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$44.83

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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