This article explores the application of continuous improvement tools in company M4C1 to improve processes and production procedure for a production line of polo shirts and the distribution of workstations to provide a more efficient flow, thereby reducing non-productive times of materials and people transportation. The steps to determine the correct approach of the procedures to control excess in production times and reprocesses for its correct implementation, flow charts, and work indicators to measure the production processes of polo shirts will be described. The Arena Simulation tool will then be used to simulate the operation of the production process of polo shirts and to compare the results before and after implementation. Finally, the conclusions of the project will be presented.