Double stitching is a sewing technique that involves stitching two lines of stitching parallel to each other, reinforcing the seam and providing additional strength to the fabric. The technique is commonly used in the textile industry, as well as in home-sewing projects. Some other terms that can be used interchangeably with double stitch include twin stitching, dual stitching, double-needle stitching, coupled stitching, and paired stitching. All of these terms refer to the same technique of sewing two parallel lines of stitching, making sure that the seam is stable and durable over time. Whatever the term used, double stitching is a great way to enhance the quality and longevity of sewn items.