FAQ
Whether you're curious about our sustainable products, personalization options, or need help with your order, you're in the right place.
At FLASKE, we're all about keeping things simple and transparent. Just like our mission.
Dive in and find what you need, or reach out if you'd like a helping hand!
Product & Materials
What does BPA-free actually mean for daily use?
What does BPA-free actually mean for daily use?
BPA-free means no harmful chemicals can leach into your drink.
FLASKE bottles are made from certified food-grade stainless steel and 100% BPA-free components, so they are safe to use every day, for years, with hot or cold drinks.
What are the dimensions of your product?
What are the dimensions of your product?
Each product has detailed dimensions height, diameter, capacity and weight. It’s all there, so you’ll know exactly what fits your bag, your cup holder, and your routine:
Bottles:
Original 500 ml (300gr): 7,5 x 7,5 x 26,5 cm
Original 750 ml (424gr): 8,5 x 8,5 x 32 cm
Original 1 Liter (445 gr): 9,5 x 9,5 x 33 cm
EVO Bottle 600ml (313 gr): 7x7x25,2 cm
Coffee Cups:
EVO Coffee Cup 200ml (205 gr): 5,5 x 5,5 x 10 cm
Coffee Cup 380ml (240 gr):6,5 x 6,5 x 13,5 cm
Tumblers:
EVO Tumbler 500ml (313 gr): 8,5 x 8,5 x 17,3 cm
Foodpots:
Foodpot 400ml (333 gr): 9 x 9 x 13 cm
What materials do we use?
What materials do we use?
We use certified high-grade 304 (18/8) stainless steel. It’s double-walled, vacuum-insulated, and completely free of BPA and toxins.
That means no weird aftertaste. Just safe, clean sips. Again and again. Built to last, and better for the planet.
Is my FLASKE leakproof?
Is my FLASKE leakproof?
Absolutely. Our bottles and cups are 100% leakproof.
You can toss them in your bag with confidence. No spills, no surprises. Just one less thing to worry about in your day.
What is an EVO product?
What is an EVO product?
EVO stands for Evolution.
This is the next generation of sustainable drinkware. It’s smoother in your hand, lighter in your bag, and designed to match your lifestyle.
With matching leakproof lids, refined shapes, and stunning colors, every detail is elevated.
And yes, you can personalize it so it’s not just a bottle, it’s your bottle. For yourself, or as a gift that actually means something.
What is the difference between EVO Series and Original Series?
What is the difference between EVO Series and Original Series?
The Original is where it all began: timeless, sturdy, and built to last.
The EVO takes it a step further: softer curves, a more elegant feel, and an upgraded finish that makes every sip feel a little more special. Including a colored match lid and a carabiner.
Both share the same high-quality, double-wall insulation and 100% leakproof design.
Can I bring my FLASKE when I fly?
Can I bring my FLASKE when I fly?
Yes, absolutely. Just make sure it’s empty when you go through security. An empty FLASKE sails through airport checks without any issues.
Even better? Many airports now have refill stations, so you can top it up with fresh water before your flight. Travel lighter, fly smarter, and skip the single-use bottles.
Use & Care
Do FLASKE products release chemicals when used with hot drinks?
Do FLASKE products release chemicals when used with hot drinks?
No.
FLASKE products are designed for hot drinks like coffee and tea and do not release chemicals, flavours or odours. What you taste is your drink only.
Can I use FLASKE for sparkling water?
Can I use FLASKE for sparkling water?
Yes, your FLASKE can handle sparkling water.
Just don’t fill it to the very top.
Carbonated drinks build pressure, so it’s important to leave a bit of space. When opening, always do so slowly to release the pressure gently.
That way, you avoid spills and enjoy your bubbles safely, wherever you go.
Can I put my FLASKE in the dishwasher?
Can I put my FLASKE in the dishwasher?
Yes, you can. Up to 60–65°C. But for the longest-lasting joy, we recommend washing it by hand.
Use warm water, our cleaning tablets, and the FLASKE brush to keep your bottle fresh, shiny, and performing like day one.
Please note: printed designs may fade over time in the dishwasher, and the lid should never be placed inside. Water can get trapped inside and cause damage.
A little care goes a long way.
What’s the best way to clean my FLASKE products?
What’s the best way to clean my FLASKE products?
To keep your FLASKE fresh and ready for every refill, we recommend rinsing it with warm water and mild soap after each use. Let it air dry with the lid off. Your FLASKE will thank you.
For everyday cleaning, our bamboo brush is perfect. For a deeper clean, use FLASKE cleaning tablets, or a natural mix of baking soda and vinegar.
Used juice, coffee, or smoothies? Clean it right after use.
Used it for water? A quick daily rinse is enough.
And don’t forget your food pot. Wash it with warm water and soap after every meal to keep it in top shape.
A clean FLASKE = a fresh start, every time.
How long does a FLASKE keep drinks hot or cold?
How long does a FLASKE keep drinks hot or cold?
It depends on the product but every FLASKE is designed to keep your drink or meal at just the right temperature, for hours on end:
- Original Bottle & EVO Bottle 600ml: up to 24 hours cold and 12 hours hot
- EVO Cup 200ml & EVO Tumbler 500ml: up to 24 hours cold and 8 hours hot
- Coffee Cup 380ml: up to 12 hours cold and 6 hours hot
- Food Pot 400ml: up to 10 hours cold and 5 hours hot
No matter what you’re carrying: ice water, coffee, or a warm lunch, your FLASKE is built to keep the moment perfect. All day, every day.
Is it safe to use a stainless steel water bottle or coffee cup?
Is it safe to use a stainless steel water bottle or coffee cup?
Yes, absolutely. Our bottles and cups are made from 18/8 food-grade stainless steel, one of the safest materials you can drink from.
It’s non-toxic, BPA-free, and doesn’t need a plastic liner. Even when dented or filled with hot drinks, it won’t leach chemicals unlike plastic.
Plus, it’s ultra-strong and way safer to travel with than glass. Just refill, sip, and go, with peace of mind.
Can I bring my FLASKE when I fly?
Can I bring my FLASKE when I fly?
Yes, absolutely. Just make sure it’s empty when you go through security. An empty FLASKE sails through airport checks without any issues.
Even better? Many airports now have refill stations, so you can top it up with fresh water before your flight. Travel lighter, fly smarter, and skip the single-use bottles.
Impact & Sustainability
What impact does FLASKE make?
What impact does FLASKE make?
Each FLASKE you use replaces around 156 disposable bottles every year, helping reduce plastic waste where it matters most.
We donate to the Plastic Soup Foundation to support cleaner, plastic-free oceans.
As a proud Social Enterprise and part of the Code Sociale Ondernemingen, we combine design, purpose, and measurable impact. So every purchase creates change.
Learn more on our Impact page.
Corporate & Personalization
Can I request a free sample?
Can I request a free sample?
Yes, in many cases.
For corporate requests, we can provide a sample so you can experience the quality, finish and look before placing a larger order.
What are the prices for corporate orders?
What are the prices for corporate orders?
Corporate prices are always lower than consumer webshop prices.
Pricing depends on quantity and personalization. As a guideline, business pricing starts from 30 pieces and becomes increasingly attractive at higher volumes. Request a proposal and you’ll receive a clear, no-surprises quote.
Is engraving permanent or can it fade over time?
Is engraving permanent or can it fade over time?
Engraving is permanent.
It is etched directly into the stainless steel and will not fade, peel or wear off, even with daily use or dishwashing.
How can I personalize my FLASKE?
How can I personalize my FLASKE?
FLASKE offers premium personalization options to match different brands and ambitions.
Available options include:
- Laser logo engraving
- Individual name engraving
- 3D color logo
- 360 degree all-around branding
- Custom bottle color from 500 pieces
- Custom packaging from 500 pieces
We help you choose the option that best fits your brand and purpose.
Can I order FLASKE for my company or events?
Can I order FLASKE for my company or events?
Absolutely.
From onboarding gifts to unforgettable client surprises, we personalize FLASKE bottles with logos, names, and custom packaging.
You can even put stock in our warehouse and we deliver within 5 days.
No boring keychains or plastic junk. Just a meaningful, sustainable gift people actually want to use and keep.
Enter your information on the business page and we will create a digital sample for you.
Orders, Shipping & Returns
I entered the wrong address. What should I do?
I entered the wrong address. What should I do?
No worries. Just contact us as soon as possible by phone or at info@flaske.com. If your order hasn’t left our warehouse yet, we’ll update the address right away.
If your order is already on its way or the delivery fails, you’ll need to cover the cost to resend it to the correct address.
Please note: cancellations are only possible if your products haven’t been personalised yet.
Need help? We’re here to sort it out with you.
Do you offer returns or exchanges?
Do you offer returns or exchanges?
We want you to be happy.
If your item isn’t personalized and it’s unused, you can return it within 30 days. No questions asked.
If there’s ever an issue with your order, we’ll make it right. Promise.
Can I return my engraved FLASKE?
Can I return my engraved FLASKE?
Because every engraved FLASKE is made just for you, we can’t accept returns on personalized items, unless there’s a mistake or something went wrong.
We check every order with care, but if there’s an issue, we’ll make it right. Just reach out, we’re here to help.