Abstract: A deformable sheet material developed for surgical splints comprises a layer of resilient plastics material and a metal mesh reinforcement disposed in the plastics layer nearer one surface thereof. Both components are bendable, but the relative stiffness of the mesh inhibits the resilience of the plastics so that the sheet will `hold` in different curved configurations with the mesh innermost. Suitable materials are polyethylene and aluminium, and a cushion layer, suitably of irradiated expanded polyethylene, can be bonded to the one surface adjacent the mesh. Also, the sheet can be perforated.