Abstract: This invention provides holding and supporting appliances used in the fields of orthopedics, rehabilitation and sports and support members thereof that are light in weight, thin, rigid and durable and breathe well, and, furthermore, support members made of reinforced plastic triaxial woven fabrics impregnated with resin. The support members according to this invention include a piece formed of reinforced plastic triaxial woven fabrics. Preferably, the formed piece should have openings representing 5 to 33 percent of the overall area thereof, and a flexural rigidity of 10 to 1×104 kg·mm2 per unit width and a basis weight (weight per unit area) of 50 to 1000 g/m2. Holding and supporting appliances are formed by using the support members described above.