Is The SHO Calix Leak Proof?

No, the SHO Calix is not leak proof.

However, our Calix does come with a closable, splash proof Slider Lid as standard.

Splash proof means that the lid will slow down any major spillages and will stop your drinks from sloshing out of the top when you're on-the-move but you will still see some leaking if this is tipped upside down. Due to this, we do recommend that the Calix is carried upright when it's in use.