The invention relates to a shower pan comprising a considerably flat one-piece body (1), manufactured by means of molding in a flexible material which is adapted to the construction floor (3) on which it is placed, which has been provided with a certain concavity or drop (31) towards a drainage pipe (2). The surface of the body (1) has a texture and finish imitating various materials, of those used in construction, textiles, woods, or materials and finishes similar to other products.