Sterile. Made of a permeable knitted fabric that allows wound drainage to flow freely into the absorbent dressing. This helps keep the wetness from the wound, which minimizes maceration and helps promote healing. White petrolatum lines the dressing, providing a comfortable non-adherence to the wound - even during dressing changes. Ideal for draining surgical wound, open ulcers, abrasions, burns and other uses. The sterile clear film packaging offers a unique stay-flat feature when peeled open.