Continuous filament polyester is formed into single knitted tubes which are then individually sewn into the binding that attaches to the mop head. The result is a truly edgeless design that is free from exposed, cut or unsealed borders. Edgeless mops are lower in aqueous extractable matter than mops produced with other materials, so fewer particles bleed onto the surfaces being cleaned. For the best results, it is recommended that wringing the Edgeless Mop with a 24-ounce downward pressure wringer with #2680 insert. Double bagged.