Coppercord consists of four solid copper cores individually suspended inside  cotton fibers and sealed in solid Teflon.. The application of cotton  fibers allows a very good degree of dimensional stability with a  predominantly air dielectric, preventing the movement of the copper wire inside the Teflon tubes. On the other hand the use of thin, solid PTFE  as an outer layer maintains a fixed proximity among the cable conductors and ensures a perfect sealing factor preventing moisture to reach the cotton  insulation and delivering an extremely efficient degree of electrical  isolation with stable values across a wide range of frequencies and  temperatures. The result is a largely air based dielectric with minimal  impact, excellent suspension of the metal conductor and elimination of  the aging and moisture absorption character of cotton.

The design is further topped with a lower density layer of PTFE serving as  bedding insulation between the signal conductors and the cable shield.  The cable is fully shielded from one end to the other using two layers of dense OFC  copper braids of very high optical coverage . Finally, the cable is finished with a soft and extremely flexible silicone rubber  jacket to enhance the mechanical characteristics of the cable as well as provide overall protection to the entire assembly.