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 12 Ounce Stainless Steel Vacuum Insulated Kids Straw Bottle, Space Unicorn

THERMOS FUNTAINER 12 Ounce Stainless Steel Vacuum Insulated Kids Straw Bottle, Space Unicorn

4.7/5

Product ID: 435082147

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Details

Brand
THERMOS
Capacity
340 g
Colour
Space Unicorn
Recommended Uses For Product
Water
Special Feature
Double Wall

🚰Hygienic covered straw

❄️12-hour cold retention

🛡️18/8 stainless steel durability

Description

🦄 Sip in Style, Stay Cool for Hours!

STAY CHILL ALL DAY - Vacuum insulation technology locks in cold for up to 12 hours—hydration that keeps pace with your kid’s adventures.
EASY CLEAN GERM FREE - Pop-up straw with hygienic cover keeps germs at bay and is removable for effortless cleaning.
BUILT TO BRAVE THE ROUGH - Premium 18/8 stainless steel construction resists drops and dings, perfect for everyday hustle and bustle.
KID APPROVED CARRY COMFORT - Lightweight design with a soft-touch integrated handle makes on-the-go hydration a breeze.
DISHWASHER SAFE CONVENIENCE - Durable materials withstand dishwasher cycles, making cleanup quick—though hand wash recommended for longevity.

The THERMOS FUNTAINER 12 Ounce Stainless Steel Kids Straw Bottle combines advanced vacuum insulation to keep drinks cold for 12 hours with rugged 18/8 stainless steel durability. Designed with a hygienic covered straw and lightweight carry handle, it’s the perfect hydration companion for active kids. Dishwasher safe and built to endure daily use, this Space Unicorn-themed bottle turns hydration into a fun, stylish ritual.

Specifications

Brand	THERMOS
Capacity	340 g
Colour	Space Unicorn
Recommended Uses For Product	Water
Special Feature	Double Wall, Leakproof, Lightweight
Age Range (Description)	Kid
Model Name	FUNTAINER 12 Ounce Bottle
Item Weight	113 g
Theme	Fantasy
Material	Stainless Steel
Number of Items	1
Pattern	bottle
Included Components	kids water bottle
Product Care Instructions	Dishwasher Safe, Hand Wash Only
Base Diameter	2.7 Inches
Cap Type	Straw Cap
With Lid	Yes
Is Dishwasher Safe	Yes
Is Microwaveable	No
Is Oven Safe	No
UPC	041205753643
Manufacturer	THERMOS
Country of Origin	USA
Item model number	F4102UC6
ASIN	B09J92YXNB

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THERMOS FUNTAINER 12 Ounce Stainless Steel Vacuum Insulated Kids Straw Bottle, Space Unicorn

Details

Description

Specifications

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