Nylon 66 is a type of synthetic polymer known as a polyamide. It is made from two different monomers, hexamethylenediamine and adipic acid, which are combined through a process called condensation polymerization. This results in a strong, durable material that is resistant to wear and tear, making it ideal for various applications. Commonly used in textiles, Nylon 66 is often found in clothing, carpets, and industrial products. Its excellent elasticity and resistance to chemicals and heat contribute to its popularity. Additionally, it can be easily dyed, allowing for a wide range of colors and designs in finished products.