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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❄️ Sip in Style, Stay Cool All Day!

BUILT TO LAST - Rugged stainless steel interior and exterior means this bottle can keep up with your hustle.
HYGIENIC HANDY - Push-button lid with pop-up straw and integrated carry handle for effortless sipping on the go.
COMPACT POWERHOUSE - Sleek 12-ounce size fits perfectly in your bag without weighing you down—hydration meets style.
STAY CHILL ALL DAY - Keeps your drinks icy cold for a full 12 hours—because lukewarm is so last season.
NEXT LEVEL INSULATION - Advanced THERMOS vacuum technology locks in freshness and blocks out heat like a pro.

The Thermos Pink Funtainer 12 Ounce Bottle features durable stainless steel construction and advanced vacuum insulation technology to keep beverages cold for up to 12 hours. Designed with a hygienic push-button lid and pop-up straw, it offers convenient, spill-resistant hydration in a compact, stylish pink design—perfect for busy professionals on the move.

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Brand	Thermos
Model Number	F4100PK6
Colour	Pink
Product Dimensions	6.86 x 6.86 x 19.56 cm; 113.4 g
Capacity	340 g
Material	Stainless Steel
Special Features	Cold 12 Hours, Double Wall, Hygienic Covered Straw, Sweatproof
Item Weight	113 g

ThermosPink Funtainer 12 Ounce Bottle

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