Stretchable materials are substances that can be easily stretched or deformed without breaking. These materials are often made from polymers, which are long chains of molecules that can be manipulated to create flexible and elastic properties. Common examples include rubber and certain types of plastics, which are used in everyday items like clothing, medical devices, and sports equipment. Researchers are continually exploring new types of stretchable materials for various applications, including wearable technology and soft robotics. Innovations in this field aim to create materials that can withstand repeated stretching while maintaining their original shape and functionality, enhancing the performance of devices like smartwatches and health monitors.