Twinline 2 is a forward-looking alternative to traditional bathtub or shower solutions. It is a shower and a bath rolled into one. The innovative concept is based on a simple truth: in European bathrooms 80% of people have a shower and 20% a full bath. Due to the straight shape of the tub the space required conforms to that of a traditional bath tub. A mechanical locking system connects the drain with the door lock to prevent accidental opening of the door while filling and bathing. The Twinline 2 has created not only a new archetype, but a new market segment as well.