You can remove the Harness from the Ziza
All parts of the Seat can be wiped clean with a damp cloth using a mild detergent.
The tray is dishwasher safe on a medium cycle or can be handwashed and immersed in water. The tray should be placed on the top shelf of the dishwasher. Some detergents are abrasive and may discolour the tray.
This will affect its appearance, but not its performance.