Stitch in the Ditch

Stitching in the ditch is a sewing technique that has several uses in garment construction. It is the technique where the stitching line is place between two seam lines with another piece of construction underneath. It is burried and invisible when done well.

Elastic can be secured at the side seams in elastic waist garments. This attached the elastic to the seam to prevent shifting and twisting.
Facings can be secured at shoulder and arm hole seams.

The bias wrap around in the modified Hong Kong seam finish.