Tensile membrane, also known as ETFE (Ethylene Tetrafluoroethylene) or PTFE (Polytetrafluoroethylene) membrane, is a lightweight, durable, and aesthetically pleasing material used in architecture for its distinctive shape and appearance. It is characterized by its ability to stretch and form complex geometric shapes, often creating a sleek, modern look. These membranes are commonly used for covering large structures such as stadiums, greenhouses, and buildings due to their strength, weather resistance, and flexibility.