Dyna-Stopper Trauma Dressing Sterile, 3 1/2″ X 5 1/2″, 60 Count. Dyna-Stopper Trauma Dressing Sterile 3 1/2″ x 5 1/2″ 60/Cs. Multipurpose wound and trauma dressing. Style Sterile. Add to Favorite. Item model number 3535.