Does anyone else’s flask seem to lose heat through the lid? It seems to get quite warm

Not that I’ve really noticed but you have to make sure the flask is hot inside ( ie boiling water) before you put your food in to ensure it stays hot.

Is this dishwasher safe?

The manufacturer says not to put in the dishwasher. I read a review by someone else that said the flask was not retaining its heat as much as it used to and they suggested it was because they had put it in the dishwasher. I always do it by hand and it is still working well. The wide neck means it’s easy to get a sponge or brush in there and get all the 90 degree angles (base & shoulders). DD much happier to take leftovers to school than boring old sandwiches every day.

Hi there, I purchased this item on the 6th Nov and the seal inside the lid has broken. Is possible to have a replacement part?

No idea try the actual firm via checking on the webb

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Thermos Blue Kids/Boys Lunch Food Flask (290ml) 5h Hot | 7h Cold

Product ID: 47892551

Details

Brand
Thermos
Capacity
290
Colour
Blue
Recommended uses for product
Fruit Salad
Special feature
BPA Free Cold

🔥5h hot retention

❄️7h cold retention

🛡️Durable stainless steel

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Description

🥶🔥 Keep it fresh, keep it cool — lunch that’s always on point!

BUILT TO BRAVE THE DAY - Rugged stainless steel construction resists drops and spills while staying cool to the touch.
EFFORTLESS CLEAN FILL - Wide mouth design makes packing, eating, and cleaning a breeze—more time for what matters.
KID APPROVED BPA FREE - Safe, leakproof, and designed specifically for kids’ lunches—because their health comes first.
ALL DAY TEMPERATURE CONTROL - Keeps meals hot for 5 hours or refreshingly cold for 7 hours—perfect for busy school days.
TRUSTED THERMOS RELIABILITY - Backed by legendary performance and 5 years of spare part availability for peace of mind.

The Thermos Blue Kids/Boys Lunch Food Flask (290ml) features double-wall vacuum insulation that maintains hot food for up to 5 hours and cold food for up to 7 hours. Crafted from durable stainless steel, it’s designed to withstand everyday kid-powered adventures while staying leakproof and BPA free. Its wide mouth ensures easy filling and cleaning, making it the ultimate lunch companion trusted by parents and kids alike.

Specifications

ASIN	B004DGJLWU
Age Range Description	Kid
Age range (description)	Kid
Best Sellers Rank	669 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 4 in Insulated Food Jars
Brand	Thermos
Brand Name	Thermos
Cap Type	Screw Cap
Capacity	290 ml
Colour	Blue
Country Of Origin	China
Customer Reviews	4.5 out of 5 stars 3,206 Reviews
EU Spare Part Availability Duration	5 Years
Global Trade Identification Number	05010576569028
Included Components	Food Flask
Is the item dishwasher safe?	No
Is the item microwaveable?	No
Item Dimensions W x H	44W x 35H millimetres
Item Type Name	Food Flask
Item Weight	0.24 Kilograms
Manufacturer	Thermos
Material Type	Stainless Steel
Model Name	f300
Number of Items	1
Pattern	Single
Product Care Instructions	Hand Wash Only
Recommended Uses For Product	Fruit Salad, Kids Dinners, Pasta, Rice, School Lunch, Soup
Recommended uses for product	Fruit Salad, Kids Dinners, Pasta, Rice, School Lunch, Soup
Special Features	BPA Free, Cold 7 Hours, Durable Stainless Steel, Hot 5 Hours, Leakproof, Vacuum Insulated
Special feature	BPA Free, Cold 7 Hours, Durable Stainless Steel, Hot 5 Hours, Leakproof, Vacuum Insulated
Unit Count	1.0 count
With Lid	Yes

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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36131CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered 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 Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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