The Even Feed Foot, sometimes referred to as the walking foot, is designed with a set of feed dogs that allow the fabric to feed without shirting and eliminate the problem of the underlayer of fabric coming up short. The Even Feed Foot is also great for topstitching, which can be spoiled due to the irregularity of stitching. This is often caused by the bulk created with the seam allowance, especially around collars and sleeves. Using the walking foot for topstitching will eliminate this problem and give perfect stitching every time.