Nonwoven Sponge McKesson Polyester / Rayon 4-Ply 4 X 4 Inch Square Sterile McKesson nonwoven sponges help wound healing and are made of polyester and rayon They are square-shaped and highly absorbent to help keep skin dry, clean and sanitary Appropriate for wound dressing, cleaning, prepping, and scrubbing 4 plies supply additional support and protection These McKesson nonwoven sponges are 4 by 4 inches and are sterile for immediate use