Johnson & Johnson First Aid Elastikon ElasticTape support strapping, fractures, muscle injuries, knees, elbows and shoulders. * Johnson & Johnson First Aid Elastikon ElasticTape - 2 Inches X 2.5 yards - 6 Each is made from a high twist, cotton elastic material with a rubber-based adhesive. It is best used where pressure dressings requiring elasticity are needed as after a mastectomy, or can be used for support strapping, fractures, muscle injuries, knees, elbows and shoulders.