Four-ply nonwoven sponges work to maintain an environment that's conducive to healing; promote the proper amount of air circulation and moisture.. Highly absorbent rayon/polyester blend construction means sponges are virtually lint free.. 4 x 4 inch nonwoven sponges are packed sterilely – 10 to a pouch.. . WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov