Trapeze bars are typically made of sturdy and durable materials that can support the weight of a patient and provide a stable structure for the patient to hold onto. 

The frame of the trapeze bar is typically made of metal, such as steel or aluminum, which provides strength and durability. The chains or ropes that attach the trapeze bar to the bed frame are typically made of strong materials such as steel or nylon. The hand grips or handles of the trapeze bar are typically made of a non-slip material such as rubber or foam, which provides a secure and comfortable grip for the patient. 

The specific materials used in a trapeze bar can vary depending on the manufacturer and model. It is important to choose a trapeze bar that is made of high-quality and durable materials to ensure that it can support the weight of the patient and provide a stable and secure structure for them to hold onto. It is also important to ensure that the trapeze bar is installed correctly and securely according to the manufacturer’s instructions, and that it is used safely and appropriately by the patient.