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What is the Sports Cap made of? Is it toxic-free?
Where is the Dopper produced?
What is the Dopper Original made of?
Does my Dopper Original contain harmful substances (e.g. BPA, BPS or phthalates)?
What is the Dopper Steel made of?
Is it OK to clean the Dopper in the dishwasher?
Can I use boiling water to clean the Dopper?
Can I use the Dopper in the freezer?
Can I use my Dopper in microwave ovens?
What is the best way to clean the Dopper and keep it that way?
Can I use my Dopper for drinks other than water?
How long does it take to deliver a Dopper outside of the Netherlands?