Covidien 9024 Curity 4 x 4 inch Non-Woven All Purpose Sponge Gauze, 4 Ply has increased performance with its heavier construction over other imported non-woven sponge brands. Covidien uses a blend of rayon and polyester for its economical line. This construction creates excellent absorbency to be used as a wound dressing or clean and prep a wound. It is very versatile as a gauze sponge and is often used to clean medical equipment due to its wicking and low linting characteristics.