Thermal mugs
Buy a thermos flask? Offers up to 40% off!
A thermos flask keeps your drink hot or cold for hours. Ideal for camping, hiking or simply at work.
Keen Bottle 510ml insulated tumbler dark blue
Keen Bottle 510ml insulated tumbler army green
SALE DAYS
Get extra savings on garden furniture
Keen Bottle 510ml insulated tumbler red
Keen Bottle Insulated Cup 510ml, White
Keen Bottle Insulated Cup 510ml, Black
Keen Bottle Water Bottle 500ml, Blue
Keen Bottle 500ml water bottle gold
Keen Bottle 500ml water bottle Orange
Keen Bottle Water Bottle 500ml, Purple
Keen Bottle Water Bottle 500ml, Pastel Pink
Keen Bottle 500ml water bottle Red
Keen Bottle 500ml water bottle Turquoise
Keen Bottle Water Bottle 500ml, Black
Keen Bottle 500ml water bottle black with gold logo
Keen Bottle 700ml water bottle Orange
Keen Bottle 700ml water bottle Pastel blue
Keen Bottle 700ml water bottle Red
Keen Bottle 700ml water bottle Pink
Keen Bottle 700ml water bottle black
Buy a thermos flask? Offers up to 40% off!
Thermos flask — hot or cold, always perfect
A thermos flask keeps your drink hot or cold for hours. Ideal for camping, hiking or simply at work.
Features
- Double-walled vacuum insulation
- Keeps hot drinks warm for 6-12 hours
- Keeps cold drinks cold for up to 24 hours
Buy a thermos flask from Boender Outdoor
Discover our thermos flasks for every occasion.
Want to know more or need personal advice?
Unsure which product would be best for your garden, terrace or balcony? Our garden furniture specialists are ready to help you at our showroom at Oostdijk 25 in Rotterdam. You can also contact us via our website — we're happy to help.
- Extensive showroom with products to view in person
- Free delivery in the Netherlands on orders ≥ €1,000
- Minimum 2-year warranty on all garden furniture
- Pay later available via Klarna or AfterPay
Complete your garden
At Boender Outdoor you'll find everything you need for a complete outdoor space: from lounge sets and garden sets to parasols, cushions and accessories. Also check out our offers for the best deals right now.
Thermos flask on offer
Looking for a thermos flask offer? View our offers page for current discounts at Boender Outdoor. We offer competitive prices all year round and have regular seasonal offers — from spring sales to autumn deals. Take advantage of the best deals now!
9.5183 reviews
Our customers love us!
We score an average of 9.5 on KiYoh — based on real, certified customer reviews.
Frequently asked questions
What should I look for when buying Thermosbekers?
Consider dimensions, material, maintenance and intended use. This helps you choose a product that suits your garden and daily use.
Is Thermosbekers suitable for outdoor use?
That depends on the material and finish. Always check the product specifications and protect the product during winter for a longer lifespan.
How do I maintain Thermosbekers?
Regular cleaning with lukewarm water and a soft cloth prevents build-up. Avoid harsh products and store loose parts dry.
Can I combine Thermosbekers with other garden products?
Yes, combine based on style, colour and size to create a functional and visually calm outdoor space.