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Frequently asked questions

Can I put my DUO in the dishwasher or microwave?

No you cannot. Due to the recycled plastic we and the 18/8 stainless steel materials we use DUO is not dishwasher or microwave safe.



What size and weight is my DUO?

DUO weights 350g. The height of the outer bottle is 28cm with a diameter of 7.8cm. The stainless steel bottle is 19.6cm with a diameter of 5.4cm.



Is DUO BPA and BSP free?

Yes, DUO is BPA and BSP free!



Is recycled plastic safe for human consumption?

Yes! The recycled plastic is thoroughly broken down and cleaned before production. We also have all our products tested by a third party to be double sure it's safe!



How does it keep hot drinks hot and cold drinks cold?

Your drinks temperature will be maintained when using the stainless steel inner bottle, this is due to its double wall vacuum insulation properties. This also means there is no heat transfer from the stainless steel (insulated compartment) to the outer bottle. However, the plastic will not have the technology to maintain temperatures, like the stainless steel bottle. We made this decision to reduce the weight of the bottle and we also wanted to reduce our carbon footprint by using materials that already exist, which is why the outer bottle is made from recycled plastic.



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DUO BOTTLES LIMITED, LONDON

COMPANY NUMBER 11940605

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