ELAN shank buttons have an integrated loop on the back that lifts the button above the fabric for smoother fastening on thicker layers. This card includes 2 buttons in 23 mm (7/8 in) for coats, sweaters, uniforms, bags, and other sewing projects that need extra clearance at the closure. Sew through the shank with strong thread and leave slight slack for the fabric thickness so the closure sits neatly without strain.