Among the many folds you will come across in clothing are zig-zag folds. These are commonly found in shirts and pants on thicker fabric. They are caused by opposing forces on the material. They change direction abruptly. Some folds are shaped like cords. Others are rounded or V-shaped. You will also see them festooned around the figure. Depending on the material, the number of folds will vary. Softer fabrics will produce more rounded folds. Tighter fabrics will have fewer folds. This is because more fabric means more layers. You will also see more complex folds in more layers of fabric.