AQUACEL Ag EXTRA. AQUACEL Ag EXTRA wound dressing is composed of two layers of Hydrofiber Technology stitched together. It is nine times stronger and has 50% greater absorbency as compared to the original AQUACEL Ag wound dressing.1 AQUACEL Ag EXTRA Hydrofiber dressing is specifically suited to help manage moderate to highly exuding wounds and is cleared for the same indications as the AQUACEL Ag dressing.