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 - 12 Ounce, Minecraft - Kids Stainless Steel Vacuum Insulated Water Bottle with Lid

THERMOS FUNTAINER Water Bottle with Straw - 12 Ounce, Minecraft - Kids Stainless Steel Vacuum Insulated Water Bottle with Lid

Product ID: 394218063

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Details

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

🚰Hygienic removable straw

❄️Keeps drinks cold 12 hrs

🛡️Durable 18/8 stainless steel

Description

❄️ Sip Cool, Stay Legendary with Minecraft Style!

STAY CHILL ALL DAY - Vacuum insulation locks in cold for up to 12 hours—hydrate like a pro.
ICONIC TRUST SINCE 1904 - Thermos heritage ensures your kid’s drink stays fresh, sealed, and protected all day long.
BUILT TO BRAVE THE ROUGH - 18/8 stainless steel construction resists drops and dings for everyday durability.
CLEAN FRESH EVERY TIME - Removable, hygienic silicone straw and dishwasher-safe design make cleaning effortless.
KID APPROVED CONVENIENCE - Lightweight design with push-button lid and soft-touch carry handle for easy on-the-go use.

The THERMOS FUNTAINER 12oz Minecraft water bottle features vacuum insulation technology that keeps drinks cold for up to 12 hours. Crafted from durable 18/8 stainless steel, it’s designed to withstand daily kid-level wear and tear. The lightweight bottle includes a push-button lid with a soft-touch carry handle and a hygienic, removable silicone straw for easy cleaning. Dishwasher safe and backed by Thermos’ 120-year legacy, this bottle combines fun Minecraft aesthetics with reliable performance for active kids.

Specifications

Brand	THERMOS
Capacity	340 g
Colour	Minecraft
Recommended Uses For Product	Water
Special Feature	Double Wall, Leakproof, Lightweight
Age Range (Description)	Kid
Model Name	FUNTAINER 12 Ounce Bottle
Item Weight	0.23 Kilograms
Material	Stainless Steel
Number of Items	1
Pattern	Bottle
Included Components	kids water bottle
Product Care Instructions	Dishwasher Safe
Base Diameter	2.7 Inches
Cap Type	Straw Cap
With Lid	Yes
Is Dishwasher Safe	Yes
Is Microwaveable	No
Is Oven Safe	No
UPC	041205750284
Manufacturer	Thermos
Global Trade Identification Number	00041205750284
Department	unisex-adult
Country of Origin	USA
Item model number	F4104MI6
ASIN	B091BD15NP

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