Gauze, Sponge, Post-Op, 4"X4", Strl, Lf 2/Pk, 1200/CsMedline Post Op Gauze: More absorbent than cotton gauze sponges, these post op sponges are filled with extra absorbent cellulose fibers for those situations that require increased absorbency. The outer layer is constructed of our absorbent non woven Avant Gauze fibers. Packed in sterile 2s. Compare to J&J Topper Avant Gauze, Sterile 2's 4" x 4"." Product Numbers: NON21442, NON21442H, NON21442Z Manufacturer Product Numbers: NON21442