Smith and Nephew Hypafix Dressing Retention Sheet 4" x 10 yard (4210) is a comfortable, nonwoven dressing retention tape that stretches for easy application and patient comfort. Hypafix is waterresistant with a non-irritating adhesive that acts as an excellent secondary dressing for gauze, foams, gels, etc. Hypafix secures dressings, tubes, catheters and instruments quickly and easily and even in hard-to-tape areas. Sold by 1 roll per box.