Can I fill my IRISgo® cup with carbonated drinks?Updated 7 days ago

In short: it works, but we do not recommend it.

The IRISgo® cup is made for still drinks such as coffee, tea, water, juice or smoothies. If you fill it with sparkling water, cola, beer or other carbonated drinks, pressure builds up inside the closed IRISgo® cup. When you open it or carry it around, that pressure can escape and the IRISgo® cup is no longer fully leak-proof.

If you still want to take a carbonated drink with you once in a while:

• Fill the IRISgo® cup only halfway so less pressure builds up.
• Open it carefully and keep it upright while doing so.
• Do not carry it lying flat in your bag.

For all still drinks the IRISgo® cup stays as leak-proof as ever, hot or cold.