ELAN shank-back buttons add clearance over thicker fabrics, making them a steady choice for coats, cardigans, jackets, and accessories. This card includes 3 buttons sized 15mm (5/8 inch) with a rear loop that keeps the front face smooth while reducing strain at the buttonhole. Hand-sew through the shank with strong thread, secure the stitches on the wrong side, and test the closure in its buttonhole before finishing for a neat drape.