This ELAN shank button is a classic closure for garments and accessories where you want a smooth front with easy fastening. Each card includes 4 button(s) sized 11 mm (3/8 in), with the shank helping the button sit slightly above thicker fabrics for cleaner wear. Sew it on securely with strong thread, and test placement against the buttonhole before finishing to confirm comfort and alignment on high-wear closures.