Tensioned fabric structures are architectural designs that use a flexible membrane, typically made of fabric, stretched over a framework to create a stable and durable form. These structures are often lightweight and can cover large areas without the need for internal supports, making them ideal for venues like sports arenas, exhibition halls, and outdoor pavilions. The tension in the fabric is achieved through a system of cables and supports, which helps maintain the shape and integrity of the structure. Common materials used include PVC, PTFE, and ETFE, which are chosen for their strength, durability, and resistance to weather conditions.