The 100% cotton lap sponges are cross stitched with super locked edges to minimize linting and loose threads. Manufactured to exceed expectations, the high quality cotton and tight weave ensures that sponges offer superior absorption. Disposable and pre-washed.- Laparotomy Sponge, 18" x 36", Sterile, X-Ray Detectable, Prewashed, Softpack, 3/pk, 20 pk/cs