Clothing line is a term used to describe the production of clothing items. Inseam, SEAM, HEM, THREAD, and Sportswear are all components of a clothing line. Inseam is the length of the inner leg SEAM of a pair of pants, SEAM is the line where two pieces of fabric are sewn together, HEM is the edge of a piece of fabric that has been folded over and sewn, THREAD is a thin strand of material used for sewing, and Sportswear is clothing designed for physical activity.