 The question of how to deal with the countless existing "technical nutrients" (synthetic materials) that cannot be recycled or reintroduced to the natural environment is dealt with in C2C design.The materials that can be reused and retain their quality can be used within the technical nutrient cycles while other materials are far more difficult to deal with, such as plastics in the Pacific Ocean.One potential example is a shoe that is designed and mass-produced using the C2C model.