sleeve element 34 finally strips of material 36 are seamed 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 at each end of the mop head 30 the mop head 30 may thereafter be washed and dried prior to attachment to the handle 40 as previously indicated the adjustment of the circular knitting machine 10 to produce the tubular knit material 14 with interspersed elongate channel depressions 20 and raised profile protrusions 24 yields substantially improved moisture retention capacity even when lower weights of material are utilized this moisture retention capacity is referred to as u201c sorbent capacity u201d and may be made up of moisture retention resulting from absorption and or adsorption at the strands of tubular knit material in this regard it is contemplated that the benefits of the present invention will be applicable to both hydrophilic as well as hydrophobic materials of construction although polyester which is hydrophobic may be particularly preferred in order to evaluate the relative performance of a mop head formed according to the present invention exemplary mop heads formed with fluid retaining strands having elongate channel depressions and raised profile protrusions were weighed in a dry state and were thereafter immersed in water until fully saturated and then weighed in a wet state once dripping had substantially ceased the contoured surface mop heads were formed according to the potentially.