To sew a fabric edge to another which is shorter, compressing the length of the longer piece so that the ends of both edges meet at both ends of the seam. This is commonly done through gathering. Easing in can also be done on the sewing machine, the feed dogs of the sewing machine have a natural easing in action. The longer fabric is placed on the bottom, next to the feed dogs. It feeds slightly faster than the top layer and is eased into the seam.