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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FUNTAINER Water Bottle with Straw, 12oz, Minecraft | Kids Stainless Steel Insulated Water Bottle, Keeps Drinks Cold Longer for School & Play, BPA-Free

Product ID: 306337031

Details

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

🚰Removable pop-up straw

❄️12-hour cold retention

🛡️18/8 stainless steel durability

€ 57.11

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

❄️ Keep it cool, keep it fun — Minecraft style hydration for the next-gen explorer!

CLEAN CAREFREE 🧼 - Removable silicone straw and dishwasher-safe design simplify cleaning—because busy parents deserve easy.
EFFORTLESS HYDRATION 🚰 - Push-button flip lid with integrated soft-touch handle makes sipping and carrying a breeze.
STAY CHILL ALL DAY ❄️ - Vacuum insulation technology keeps drinks cold up to 12 hours—hydration that lasts through every adventure.
BUILT TO BRAVE THE ROUGH 🛡️ - Premium 18/8 stainless steel construction resists drops and dings, perfect for active kids on the go.
ICONIC TRUSTED SINCE 1904 🏆 - Thermos heritage means quality you can count on, keeping your little one’s drinks fresh and cool every day.

The THERMOS FUNTAINER 12oz water bottle combines advanced vacuum insulation to keep drinks cold for 12 hours with rugged 18/8 stainless steel durability. Designed for kids, it features a push-button flip lid, integrated soft-touch handle, and a removable silicone straw for easy cleaning. Dishwasher safe and backed by Thermos’ 120-year legacy, this Minecraft-themed bottle is the ultimate hydration companion for school and play.

Specifications

ASIN	B091BD15NP
Additional Features	Cold 12 Hours, Double Wall, Vacuum Insulated
Age Range Description	Kid
Base Diameter	2.7 Inches
Best Sellers Rank	#50 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #5 in Insulated Bottles
Brand Name	THERMOS
Cap Type	Flip Top Cap
Capacity	12 ounces
Color	Minecraft
Customer Reviews	4.7 4.7 out of 5 stars (37,400)
Global Trade Identification Number	00041205750284
Included Components	kids water bottle
Is Oven Safe	No
Is the item dishwasher safe?	Yes
Is the item microwaveable?	No
Item Dimensions W x H	2.7"W x 7.7"H
Item Type Name	insulated-beverage-bottles
Item Weight	0.23 Kilograms
Manufacturer	Thermos
Manufacturer Warranty Description	limited 5 year manufacturer
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
Theme	Licensed Characters
UPC	041205750284
Unit Count	1.0 Count
With Lid	Yes

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€ 57.11

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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