ELAN four‑hole sew‑through button measuring 23 mm (7/8″) in diameter, supplied 2 per card. Four holes distribute stress evenly for a secure, durable attachment on coats, sweaters and bags. Stitch in a cross or parallel pattern for the desired look and strength. Install by hand or with a machine button program, and confirm that the button passes smoothly through the buttonhole without distorting the fabric.