This document compares the Progressive Bundle System and Single PCS Flow System for garment production. The Progressive Bundle System involves bundling multiple garment pieces together and moving the bundle between operations, while the Single PCS Flow System bundles or clips just one garment piece at a time and moves it individually between operations. The Single PCS Flow System allows for less waste in process, time savings, better line balancing and productivity, and more flexibility for reworks compared to the Progressive Bundle System. Both systems have advantages and disadvantages for the production process.