A medical bandaging product (20) in roll form for being dispensed in predetermined lengths suitable for a given medical use, and including an elongate sleeve (15) formed of moisture-impervious material and sealable to prevent entry of moisture, and an elongate medical bandage material (10) substantially the same length as the sleeve (15) and positioned in the sleeve (15) in a single length along the length of the sleeve (15) and sealed therein against entry of moisture until use. The medical bandage material (10) includes a substrate (11) and a reactive system impregnated into or coated onto the substrate (11). The system remains stable when maintained in substantially moisture-free conditions and hardens upon exposure to sufficient moisture to form a rigid, self supporting structure. A protective liner sheet (12) encloses the substrate (11) along its length and forms a barrier between the substrate (11) and the sleeve (15) during storage, and is optionally removable after removal of the medical bandage material (10) from the sleeve (15) and prior to application to a patient. The substrate (11) is adapted for having a protective padding material interposed between the substrate (11) and the patient.
