The drainage system allows water to drain with 30 litres per minute, while a cellular filter reliably collects hair and other soiling from the bathtub. A magnet-structure inner core allows the interior to open when the water flows; when there is no water, it automatically snaps back. The silicone seal ring at the bottom of the magnet is non-toxic, non-stick and chemically stable and helps to prevent malodour and bacteria inside the drainage system. The drain pipe features a universal joint with a rotation angle of 270 degrees. This allows installation in very differing wall conditions. The drainage pipe is made of copper, which also prevents the formation of bacteria.