12 ply pure gauze pads are packaged in sterile envelopes and are perfectly suited for cleaning wounds and applying medication or antiseptic. they can be stacked on a wound to absorb additional fluid and can be removed without re-opening the wound. To use: remove from package and apply directly to wound, using tape, gauze or elastic bandage to wrap. this item meets ANSI/ISEA Z308.1-2009 standards.