Kilt pleats are the folds of fabric at the back of a kilt that allow for movement, shape, and pattern alignment, forming one of the most defining structural elements of the garment. These pleats are created by folding the fabric in a consistent pattern, typically either to the sett or to the stripe in traditional tartan kilts, and are arranged so the front remains flat while the back expands and moves freely. The pleats are stitched down through the fell to hold their structure, while the lower portions hang loose, giving the kilt its distinctive appearance and functionality. The number, depth, and alignment of pleats can vary depending on the design and construction method, influencing both the look and performance of the kilt.