What is the outside of an ethernet cable made of?

The outside of an Ethernet cable is typically made of a durable plastic or PVC (polyvinyl chloride) material, which serves as insulation and protection for the internal wires. This outer layer helps shield the cable from physical damage, moisture, and electromagnetic interference. In some cases, cables may have a more robust outer layer made of materials like low-smoke, zero-halogen (LSZH) or other fire-resistant compounds for specific applications. Additionally, the outer casing may include a color-coded or labeled design for easy identification.