These ELAN shank-back buttons are sew-on closures designed to sit slightly above the fabric for easier fastening on thicker layers. Each card includes 3 button(s) measuring 15 mm (5/8 in), sized for replacing missing buttons on coats, cardigans, and structured accessories. Sew through the rear shank with strong thread, check buttonhole clearance before attaching, and reinforce stitches on high-stress areas.