This research is carried out in the production process of a clothing company dedicated to the manufacture and marketing of merchandising articles, with the objective of reducing the variability in the process using Lean tools. By performing an analysis of the current situation of the company, the production process is selected as the most critical. In the definition stage, the main problem that turns out to be the breach in the delivery time of T-shirt orders is identified. Therefore, it is necessary to describe the process and identify the client's voice in order to develop a Lean project. In the measurement stage, the variable to be measured is identified, which is the production time in days, with the orders for poles classified as medium being those with the greatest economic impact. Performing the calculation of the potential and real capacity of the process and a study of the XR co...