PCR stands for Post-Consumer Recycled content, which refers to recovered and recycled materials after consumers have used them. For example, when you throw away a plastic bottle after drinking from it, that bottle can be collected and recycled into a new product, such as a plastic bag. This process helps reduce how much waste eventually ends up in landfills and conserves natural resources, as we can use recycled materials to create new products instead of producing new materials from scratch.