The ELAN shank button suits sewing projects and repairs where a raised back helps the closure sit neatly over thicker fabrics, knits, and plackets. Each card includes 4 buttons sized 9 mm (3/8 in), and the shank on the reverse leaves room for stitches so the button can pivot without puckering the fabric. Stitch on by hand with button thread, check alignment against your buttonhole, and test tension on a scrap so the fastening stays secure through regular wear and washing.