Carbon-fiber reinforced polymer

Carbon fiber (or fibre)-reinforced polymers are extremely strong and light fiber-reinforced plastics that contain carbon fibers. CFRPs can be expensive to produce, but are commonly used wherever high strength-to-weight ratio and stiffness (rigidity) are required, such as aerospace, superstructures of ships, automotive, civil engineering, sports equipment, and an increasing number of consumer and technical applications.

Source: Wikipedia — Carbon-fiber reinforced polymer (CC BY-SA 4.0)