Post-consumer material is waste generated once a product has reached the end of its intended use.
[noun] It comes from households, businesses, or institutions and can no longer be used for its original purpose. Returns from the distribution chain are also included. Unlike pre-consumer material, it is considered burden-free since the environmental impact was already accounted for during its first life cycle.
Example: Used plastic bottles collected from recycling bins are post-consumer material.
From ECONYL® Blog
Carbon Offsetting
Carbon offsetting is the practice of compensating for greenhouse gas emissions by funding projects that reduce or remove emissions elsewhere.
Upcycling is the process of transforming waste materials, by-products, or unwanted products into new items of higher value, quality, or environmental benefit.