Hydrofiber technology absorbs wound fluid and creates a soft gel to maintain a moist wound environment.. Locks in exudate through vertically wicking, reducing the risk of maceration./li>Helps minimize pain while in place and during dressing changes. Silicone adhesive is gentle on skin.. Barrier prevents water and bacteria from getting in.. 19.8 x 14 centimeters for heels with a 14 x 8.7 centimeter pad.