The Lean ergonomic chair, developed as a thesis project at OCAD University for clothing factory workers using sewing machines for prolonged periods, offers essential features for comfort and well-being. With a built-in height adjuster, the chair ensures spinal support and stabilization for various body types during extended work hours. Its ergonomic design promotes good posture, back support, a natural lower back curve, exceptional cushioned comfort, and a contoured saddle-style seat. The chair's smaller seat width discourages hunching, and a forward tilting mechanism enhances workers' proximity to their tasks. Additionally, feet levellers and two drawers for equipment storage contribute to the chair's functionality, while a red upholstery adds a touch of detail and increases performance levels.