The undercast padding is a soft, cushioning material used to line the inside of a cast for added comfort and protection. Made from lightweight, non-absorbent materials like cotton or synthetic fibers, undercast padding helps prevent skin irritation and pressure sores by providing a smooth, protective barrier between the cast and the skin. It also allows for better air circulation, reducing the risk of moisture buildup. Undercast padding is commonly used in fracture care and orthopedic procedures to enhance the comfort and effectiveness of a cast while supporting the healing process.