
Technical details
Insulated Steel Tea Flask, 400ml
This 400ml stainless steel tea thermos bottle is built to keep your brew at the right temperature, hot or cold, for hours. The double-wall vacuum insulation does the heavy lifting. It's compact enough for a bag or desk, and the wide mouth makes it easy to fill, clean, and actually enjoy. Hand wash recommended. Not for use in microwave or dishwasher. Designed for loose leaf tea, herbal infusions, or any hot drink you refuse to rush.

The Real Difference
Your Tea, Still Hot When You Get There
You know that feeling when you finally sit down for your tea and it's already lukewarm? Well now, that's over, dear. This insulated stainless steel flask keeps your brew properly hot, or properly cold, so your first sip and your last sip taste like you meant it. No more sad, tepid chamomile at your desk. Just your tea, exactly as it should be.

What It's Made Of
Solid Steel, Serious Vacuum Insulation
This thermos flask is stainless steel through and through, with double-wall vacuum insulation that actually works. Mind you, stainless steel doesn't hold onto flavors or odors the way plastic does, which matters when you're switching between a bold black tea and a delicate white one. The 400ml size is just right, not too heavy, not too small. Honest, no-fuss construction you can feel the moment you hold it.

Picture This
Morning Brew, Ready for the Road
You steep your favorite loose leaf, tuck this little steel flask into your bag, and head out the door. An hour later, on the train or at your desk, you unscrew the lid and it's still steaming. Between you and me, that's the kind of small pleasure that makes a whole morning feel right. Hot tea on your schedule, not the kettle's.

Everyday Proof
The Insulated Flask That Earns Its Place
Let me tell you, a thermos bottle only proves itself over time. This one is compact enough to slip into a tote, a work bag, or a coat pocket without a fuss. The stainless steel holds up to daily use, and because it's easy to clean by hand, you'll actually use it every day instead of leaving it in the back of a cupboard. Practical, hold on now, that's the highest compliment I give.

What You're Getting
One Flask, Ready to Pour
Your order includes one 400ml stainless steel insulated tea thermos bottle, lid included. That's it, no mystery extras, no missing pieces. Everything you need to start using it the same morning it arrives. Simple, honest, and ready for your first brew. No assembly, no fuss, just fill it up and go, sweetheart.
FAQ
Your Questions, Answered
Is 400ml enough for a full travel mug of tea?
400ml is a generous single serving, roughly one and a half standard mugs. It's the sweet spot for a morning commute or a long work session without being bulky. Enough to enjoy slowly, not so much it gets heavy in your bag.
Can I put this in the dishwasher?
Hand wash only, I'm afraid. The dishwasher can damage the vacuum insulation over time, and believe me, you don't want to lose that. A quick rinse with warm soapy water is all it needs, and it stays in good shape for the long run.
Will it keep my tea hot for hours?
That's exactly what the double-wall vacuum insulation is built for. It keeps hot drinks hot and cold drinks cold for an extended time. How long depends on your starting temperature and the environment, but well into your morning, yes.
Can I use it for cold drinks too, like iced herbal tea?
Absolutely. The vacuum insulation works both ways, keeping cold drinks cold just as well as it keeps hot drinks hot. Your iced hibiscus or cold brew green tea will stay properly chilled. A good thermos flask earns its keep year-round.
Is stainless steel safe for tea? Will it affect the flavor?
Well now, stainless steel is one of the best materials for tea. It doesn't absorb flavors or odors, so your delicate white tea won't taste like last Tuesday's chai. It's also durable and doesn't leach anything into your drink. A solid, honest choice.

Tea Expertise
60 years of tea experience. Every product rigorously selected by passionate experts.

Customer Satisfaction
30-day money-back guarantee. Attentive, responsive support at every step.

Guaranteed Quality
Tested and verified products. High quality and durability for a lasting experience.

Careful Shipping
Neat, secure packaging. Fast dispatch with real-time tracking.
Frequently Asked Questions
Dear tea lovers, we have gathered here the answers to the most common questions about our teapots and your orders. With over 60 years of experience in the world of tea, we are happy to share our expertise with you. Whether you are a seasoned connoisseur or simply looking for a new tasting experience, we hope this helps you make the perfect choice.
What are your delivery times?
Orders are processed within 1 to 3 business days, and US delivery usually takes 5 to 12 business days. You will receive tracking by email as soon as your order ships.
How can I track my order?
As soon as your order ships, you receive an email with your tracking number and a link to follow the delivery in real time.
Which teapot do you recommend for a beginner?
For beginners we often recommend a ceramic or glass teapot: easy to use, easy to clean, and they suit every kind of tea while you find your favorites.
How do I choose the right teapot size?
It depends on your habits. For one person, 10 to 17 oz is ideal. For a couple, aim for 20 to 34 oz, and for families or hosting, 34 oz and up.
Can I use the same teapot for different teas?
You can, but we recommend dedicated teapots for strong teas: unglazed clay and cast iron keep a memory of the tea. Glass, porcelain and stainless steel stay neutral between teas.
Do you offer a warranty on your products?
Yes, all our products are guaranteed for 1 year against manufacturing defects, on top of the 30-day money-back guarantee.
Can I return an item if I am not satisfied?
Absolutely. We offer a 30-day return policy: if a product does not suit you, email teatime@luluteapot.com and we will make it right.