Abstract: A method and apparatus for wet treatment, especially treating with lye solution and mercerizing, of knitted tubular goods. According to the method, the tube is passed through the space between adjacent rollers. A longitudinal movement is imparted to one of the two respectively straight portions of the cross section of the tube, while a transverse movement is imparted to the other straight section. The apparatus for carrying out this method is a foulard having driven rollers, at least some of which are constantly movable in an axial direction, which is transverse to the longitudinal movement of the tube, successive axially movable rollers having a progressively delayed axial movement.