In order for your pop-up sponge to unfold completely, you need to bring it into contact with water. Simply run water over the sponge or place it in the water. Wash the sponge thoroughly before using it. Our pop-up sponge can be washed several times and is reusable. It is important that you wash your sponge regularly so that no germs form and it lasts a long time. It can also be washed in the top rack of your dishwasher or at 60°C in your washing machine. However, due to its natural fibres, the sponge may shrink slightly during washing and is therefore not suitable for the tumble dryer.