key 10 is used to release the locked working position shown in fig1 to 3 the mop head 1 consists of an elongate textile layer 11 adapted to the shape of the mop holder 2 mop fringes 12 are fixed to the bottom of the textile layer 11 the textile layer 11 has fringe free zones on its upper surface these fringe free zones are in the form of a pocket 13 at one longitudinal end of the mop head 1 and in the form of a fixing plate 14 at the other longitudinal end of mop head 1 the pocket 13 is preferably stitched to the upper surface of the mop head 1 both at the longitudinal end and at the transverse sides by contrast the fixing plate 14 is only fixed to the textile layer 11 at its longitudinal end the fixing plate 14 consists of a film like structure of plastic and is directly stitched to the part carrying the fringes 12 by means of a seam 15 extending parallel to the longitudinal end edge of the mop head 1 on the upper surface of the textile layer 11 the fixing plate 14 is flexible and in particular film like at least in the region of the seam 15 the fixing plate 14 preferably consists of a thermoplastic based on polyether esters the thermoplastic is partly crystalline and is marketed under the name of arnitel u00ae for example the fastening elements 8 and 18 of the fixing plate 14 and the fastenings.