Abstract: A padded rail arrangement used in combination with a common water bed characterized as selectively detachable pad sections having a longitudinal cut-out undersurface adapted to be received on the upper portions of the rails defining the framework of the water bed. The invention is presented in two basic forms, to-wit, where, in one form, a pad section is adapted to continuously define a corner section of the water bed framework and, in another form, the corners of the water bed framework are exposed or uncovered. An independent mitered corner pad section utilizing the longitudinal cut-out undersurface is also presented. The pad section is typically covered by material for durability and appearance purposes.