Cardinal Sterile Packing Strip offer two types of packing strips: plain or impregnated with Iodoform. All are made with 100% cotton. Used for drainage of infected or open wounds. Not made with natural rubber latex. It can be used dry to absorb drainage in exuding wounds, or soaked with a medication of choice. Secondary dressing is required to hold strips in place and protect wounds from outside contaminants. Latex-Free