Merrow borders, popular as overlock sewing borders, give traditional look to embroidered patches. The overlock stitch wraps around the outside of the patch. It forms a wrapped thread border about two to four millimeters wide. This technique helps to add weight and strength to the patch material. It also eliminates the possibility of frayed edges.
Merrow borders serve best on woven, traditional-looking embroidered patches. It provides an old-school vintage look to motorcycle or nametag patches. As it has a thick border, it is preferred for borders on shapes, i.e., circles, triangles, rectangles, or shield-shaped patches with no sharp inside angles.