The cotton mop is absorbent and economical featuring a the 4-ply high quality cotton yarn that is sewn into a durable polyester backing. This mop effective in dust mopping and is ideal for schools, contract cleaners and commercial buildings. Key Features Tie-on backing for easy on/off of dust mop heads Fits on Snap-On and Clip-On frames 4-Ply high-quality cotton yarn Durable polyester backing