The balls are made of specially designed rubber with a metal magnetic core inside. They are placed in the washing machine drum and can remain there permanently. The special rubber absorbs impact against the inner surface, ensuring no damage to the machine. During operation, the balls mechanically knock dirt out of the laundry, imitating the action of hand washing.

This improves washing quality. 
Detergent usage can be reduced by 50-70% depending on the degree of soiling.
A smaller amount of powder rinses out better, meaning significantly less residue remains in the laundry, which is beneficial for health.
Using the balls allows washing at lower temperatures than usually required. This results in energy savings.
The balls soften water and reduce the use of fabric softeners by 30%.
Prevent pilling and reduce drying time by 30%.
Prevent laundry from tangling.