Gelling Fiber Dressing Exufiber® Polyvinyl Alcohol Fibers 4/5 X 17-7/10 Inch Rope Hydrolock technology locks in exudate, blood, and bacteria. Viewed under a microscope, you can see that Exufiber is full of tightly entangled fibers that minimize the free space for fluid or exudate to flow, which in turn boosts the entire dressing’s integrity. 0.8 x 17.7 inches 1 Each