Toto Ltd. has unveiled a bathtub featuring an "ultimate soothing effect" it has developed using the findings of research into brain science and biomechanics, at the ISH trade fair for housing facilities in Frankfurt. The bathtub was designed to make every body part feel relaxed, by studying loads on muscles and joints, and changes in blood circulation in the brain. The product will comfort not only the bodies of users but their brains as it allows them to bathe as if they are floating.