Gauze Non-Woven Sponge Ns 4 x4 4ply Bx/200 4 x 4 4 Ply Bg/200 * Our absorbent gauze sponges are made from the highest quality materials and are designed to meet or exceed U.S.P. specifications for purity and absorbency * Sterile all-gauze sponges feature an easy to open peel back envelope for an aseptic presentation * All non-sterile gauze sponges are made of U.S.P. Type VII gauze with the cut edges folded in