ELAN two‑hole sew‑through button measuring 18 mm (3/4″) in diameter, packaged 3 per card. A simple, versatile fastener for shirts, cardigans, childrenswear and accessories, providing a neat, low‑profile finish. Attach by hand or with a machine button‑sew program. For thicker layers, add a small thread shank to prevent puckering, and verify placement so tension is balanced and the button sits flat.