is meant any structure in which one or more lengths of elongate material are folded upon themselves such that the folds define the edge boundary with discrete strand elements extending towards an interior and away from the edge boundary according to the illustrated and potentially preferred practice each skein structure forming the mop head 30 is attached to an elongate carrier strip 34 such as a fabric film or the like via a seam 36 running along the length of the skein structure in transverse relation to the strands of tubular knit material 14 at positions inboard of the folds 32 so as to maintain a desired adjacent relation of the strand elements moreover the ends of the tubular knit material where the winding begins and concludes are also held in hidden relation beneath the carrier strip 34 by way of example and not limitation the carrier strip 34 is preferably a relatively stable knit or woven fabric structure such as woven polyester or the like seam 36 may be a traditional sewn seam although other constructions such as welded seams and the like may also be used as illustrated the carrier strips 34 with attached skeins are preferably seamed into place across an outwardly projecting portion of the backing structure 38 in parallel relation in one contemplated arrangement the mop head has four strips of fabric with attached skeins seamed lengthwise along the mop head fabric 38 as illustrated in fig3 however any greater or lesser number.