Smith and Nephew Inc Hypafix® Non-woven Fabric Dressing Retention Tape 4" x 11 yds, Adhesive, Highly Conformable. 1/ roll/Box Smith and Nephew Hypafix® Dressing Retention Tape secures dressings, tubes, catheters and instruments quickly and easily, even in hard-to-tape areas. It is comfortable and non-woven that stretches for easy application and patient comfort. â– Allows joints to be dressed without constraining movement. â– Provides reliable fixation for catheter and drainage tubes. â– Water-resistant, with a non-irritating adhesive that acts as an excellent secondary dressing for gauze, foam or gels. â– Combines security with comfort.