Structure - A blanket stitch is composed of a series of loops that are anchored by the neighboring stitch to create an L shape.

Repair Use - These non-stretch stitches can be used to reinforce hems or to sew down the edges of a patch. They're great for stable binding because they create a continuous stitch that runs along the edge of the fabric.

The name "blanket" stitch comes from its traditional use to secure the edges of blankets.