This ELAN 4-hole button is made for basic sew-through closures on garments, accessories, and craft projects where a flat profile is preferred. Four holes support secure attachment, and the card provides 2 buttons sized 18 mm so you can complete a small set or replace missing pieces. Sew with a cross or parallel stitch pattern using matching thread, secure the ends well, and confirm fit with your buttonhole before washing the finished item.